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Words That Start With I

Dictionary words beginning with the letter I, each with its definition.

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300 Words

  1. 1 in Contained by, inside, or within the limits of something — spatially, in time, or in a more abstract sense.
  2. 2 it Used to refer to a thing, animal, or abstract idea that has already been mentioned or is understood.
  3. 3 if Used to introduce a condition: supposing that something is or were true.
  4. 4 its Belonging to it.
  5. 5 into Moving toward the inside of something.
  6. 6 including Used to introduce one or more examples that form part of a larger group.
  7. 7 important Having real significance, value, or influence.
  8. 8 international Involving or shared by two or more nations.
  9. 9 information Facts or knowledge provided or learned about something.
  10. 10 idea A thought, plan, or mental impression formed in the mind.
  11. 11 interest A feeling of wanting to know more about something or pay attention to it.
  12. 12 include To have something as part of a whole; to contain.
  13. 13 issue A subject or problem that people discuss or disagree about.
  14. 14 instead In place of something else already mentioned; as a substitute.
  15. 15 inside The interior or inner part of something.
  16. 16 industry A particular branch of economic or commercial activity, such as manufacturing or a specific trade.
  17. 17 involved Taking part in or connected to something, especially a situation, activity, or relationship.
  18. 18 itself Used to refer back to a thing that is both the subject and the object of the same action.
  19. 19 internet The worldwide network of connected computers that people use to browse websites, send messages, and share info...
  20. 20 Ii A Japanese surname.
  21. 21 increase To become larger in amount, number, or degree.
  22. 22 included Provided as part of a package or whole, without extra charge.
  23. 23 individual A single person, considered on their own rather than as part of a group.
  24. 24 island A piece of land completely surrounded by water.
  25. 25 ice Water that has frozen solid.
  26. 26 income Money received regularly, especially from work, business, or investments.
  27. 27 image A visual representation of something, such as a picture, photo, or drawing.
  28. 28 immediately Right away, without any delay.
  29. 29 independent Not controlled or influenced by others; self-governing or self-sufficient.
  30. 30 India A country in South Asia, officially the Republic of India, with New Delhi as its capital.
  31. 31 interesting Holding someone's attention; engaging or thought-provoking.
  32. 32 impact The force of one object striking another; a collision.
  33. 33 interested Showing curiosity or attention toward something.
  34. 34 Israel A country in the Middle East on the eastern shore of the Mediterranean Sea, established as a modern state in 1...
  35. 35 Indian Relating to India or its people, languages, or culture.
  36. 36 investment Money put into something, such as a business or property, with the goal of making a profit.
  37. 37 imagine To form a mental picture of something, especially something not present or not real.
  38. 38 indeed Used to confirm or emphasize a statement; truly, in fact.
  39. 39 insurance An arrangement where you pay a company regularly so it covers you financially if something bad happens.
  40. 40 interview A formal meeting in which someone is asked questions to assess them for a job or position.
  41. 41 influence The power to affect how someone or something develops, behaves, or thinks.
  42. 42 impossible Not able to happen or be done.
  43. 43 industrial Relating to industry, especially manufacturing.
  44. 44 institute An organization set up for a particular purpose, often research, education, or a professional cause.
  45. 45 Im A type of galaxy that has no clear spiral or elliptical structure; an irregular galaxy.
  46. 46 improve To make something better in quality, value, or condition.
  47. 47 investigation A careful and systematic inquiry into the facts of a matter.
  48. 48 interests The group of people or organizations with a stake in a particular matter, considered together.
  49. 49 ill Unwell or in poor health; sick.
  50. 50 initial Happening at the very start; first.
  51. 51 Italy A country in Southern Europe shaped like a boot, known for its history, art, and cuisine. Capital: Rome.
  52. 52 introduced Brought in from elsewhere rather than naturally occurring in a place.
  53. 53 intended Planned or meant to happen, rather than accidental.
  54. 54 internal Located on the inside, rather than the outside.
  55. 55 iron A common, silvery-grey metal that rusts and is attracted to magnets; the main ingredient of steel.
  56. 56 Italian Relating to Italy, its people, culture, or language.
  57. 57 Inc Abbreviation for "incorporated," used after a company name to show it is a legally registered corporation.
  58. 58 increasing Growing larger in amount, number, or degree over time.
  59. 59 intelligence The ability to learn, understand, and apply knowledge effectively.
  60. 60 importance The quality of being significant, valuable, or worthy of attention.
  61. 61 identity Who a person is, including their name, background, and sense of self.
  62. 62 Iran A country in the Middle East, officially the Islamic Republic of Iran, with Tehran as its capital.
  63. 63 injury Physical damage or harm done to the body.
  64. 64 illegal Against the law; not authorised or permitted by legislation.
  65. 65 independence Freedom from control, influence, or support by others.
  66. 66 instance A particular example or occurrence of something.
  67. 67 Ireland An island in northwestern Europe, and the country occupying most of it (distinct from Northern Ireland, part o...
  68. 68 index An alphabetical list at the back of a book showing where topics can be found.
  69. 69 immediate Happening or done right away, without delay.
  70. 70 improved Made better than before; enhanced.
  71. 71 identify To work out or state exactly who or what someone or something is.
  72. 72 inspired Showing unusual creativity, skill, or energy, as if from a sudden burst of inspiration.
  73. 73 invited Having been asked to attend an event or take part in something.
  74. 74 item A single thing, especially one on a list or among a group of things.
  75. 75 incident An event, especially one that is noteworthy, unpleasant, or disruptive.
  76. 76 introduction The act of making people known to each other.
  77. 77 incredible So unlikely or extraordinary that it is hard to believe.
  78. 78 Iraq A country in the Middle East, officially the Republic of Iraq, with Baghdad as its capital and largest city.
  79. 79 Irish Relating to Ireland, its people, or its culture.
  80. 80 Islands A district of Hong Kong made up of an archipelago of islands, including Lantau.
  81. 81 ID In Freudian psychology, the part of the mind driven by basic, unconscious instincts and desires.
  82. 82 ideal Perfect or the best possible for a given purpose.
  83. 83 interior Located inside, rather than on the surface or at the edge.
  84. 84 improvement A change that makes something better, or the process of becoming better.
  85. 85 initially At first, before anything changed.
  86. 86 institution A large, established organization, especially one dedicated to education, public service, or a similar purpose...
  87. 87 increasingly More and more as time goes on.
  88. 88 indicate To point out or show; to make something known.
  89. 89 info Information (an informal shortening).
  90. 90 ignore To deliberately pay no attention to someone or something.
  91. 91 infrastructure The basic physical systems — roads, power, water, networks — that a place or organization needs to function.
  92. 92 inner Located on the inside; closer to the center.
  93. 93 Islamic Relating to or characteristic of Islam, its followers, or its culture.
  94. 94 Israeli A person from Israel or of Israeli citizenship.
  95. 95 informed Having good knowledge of a subject or situation; kept up to date on the facts.
  96. 96 Islam A monotheistic religion founded on the teachings of the prophet Muhammad and the Quran, followed by Muslims wo...
  97. 97 illness A disease or period of poor health.
  98. 98 input Information, ideas, or effort contributed toward something.
  99. 99 injured Hurt, having suffered physical damage.
  100. 100 intense Extremely strong, forceful, or extreme in degree.
  101. 101 immigration The act of moving into a country you were not born in, in order to live there permanently.
  102. 102 impressive Causing admiration because of size, skill, quality, or achievement.
  103. 103 inch A unit of length equal to 1/12 of a foot, or 2.54 centimetres.
  104. 104 innocent Free of guilt or wrongdoing; not responsible for a crime or bad act.
  105. 105 instrument A tool, especially a precise one used for measuring, medical work, or scientific tasks.
  106. 106 introduce To make people known to each other for the first time.
  107. 107 involvement The fact or state of taking part in or being connected to something.
  108. 108 infection An illness caused by harmful bacteria, viruses, or other germs entering the body.
  109. 109 intention A plan or aim that guides what someone does.
  110. 110 Indonesia A large island nation in Southeast Asia, officially the Republic of Indonesia, with its capital at Jakarta.
  111. 111 idiot A foolish or stupid person, or someone who makes a very poor decision.
  112. 112 initiative A new plan or effort aimed at solving a problem or achieving a goal.
  113. 113 intervention The act of becoming involved in a situation in order to influence or change its outcome.
  114. 114 impression A feeling or opinion formed about something, often quickly and without deep analysis.
  115. 115 insane Suffering from serious mental illness; not of sound mind.
  116. 116 improving Intended to make someone better, especially morally, mentally, or in health.
  117. 117 intellectual Relating to the ability to think and reason, rather than to emotions or physical skill.
  118. 118 invite To ask someone to come to an event or take part in something.
  119. 119 involve To include something as a necessary part.
  120. 120 inspiration A person, idea, or experience that stimulates creativity or motivation.
  121. 121 Ian A male given name from Scottish Gaelic Eòin, equivalent to English John.
  122. 122 impressed Feeling admiration or approval because of something.
  123. 123 innovation The act of creating or introducing something new.
  124. 124 iPhone Apple's line of smartphones, known for their touchscreen and integration with Apple's other devices.
  125. 125 inquiry A question or request for information.
  126. 126 instant Happening right away, with no delay.
  127. 127 integrated Combined into a single, coordinated whole rather than kept as separate parts.
  128. 128 intent A plan or purpose behind an action.
  129. 129 implementation The process of putting a plan or idea into practice.
  130. 130 influenced Affected or shaped by someone or something else.
  131. 131 intelligent Having or showing a strong ability to learn, reason, and understand.
  132. 132 invasion A military attack in which armed forces enter another territory to conquer or control it.
  133. 133 invest To put money into something, such as a business, property, or shares, in the hope of making a profit.
  134. 134 isolated Set apart from others; remote or alone.
  135. 135 identification A document that proves who someone is.
  136. 136 inter To bury a body in the ground or in a tomb.
  137. 137 identical Exactly the same in every detail; impossible to tell apart.
  138. 138 imperial Relating to an empire, or to an emperor or empress.
  139. 139 indigenous Originating naturally in a particular place; native, especially before colonization or outside influence.
  140. 140 interaction An occasion when two or more things or people affect or communicate with each other.
  141. 141 icon A small picture or symbol on a screen that represents a program, file, or action.
  142. 142 incredibly To an extreme or surprising degree.
  143. 143 investigate To look into something carefully in order to find out the facts.
  144. 144 insight A clear, often sudden, understanding of the true nature of something.
  145. 145 interface The point where two systems, devices, or people meet and interact.
  146. 146 imagination The mental ability to form new ideas, images, or concepts not currently perceived by the senses.
  147. 147 integrity Firm adherence to honesty and strong moral principles.
  148. 148 infected Having caught a disease or having a wound contaminated with harmful germs.
  149. 149 inspector A person whose job is to examine and check something for quality, safety, or compliance.
  150. 150 instantly Right away; without any delay at all.
  151. 151 Illinois Relating to the Illinois Confederacy, an alliance of Algonquian-speaking Native American peoples, or to their...
  152. 152 incorporated Formally established as a legal company, usually one where shareholders' liability is limited.
  153. 153 infinite Without limits or end; endless in size, extent, or number.
  154. 154 implement To put a plan, decision, or system into actual practice.
  155. 155 inflation A general and sustained rise in prices, which reduces the purchasing power of money.
  156. 156 install To set up equipment, software, or a system so it's ready for use.
  157. 157 invented Made up; not real or factual.
  158. 158 instruction A statement telling someone what to do, or a set of such statements.
  159. 159 intensity The quality or degree of being strong, forceful, or extreme.
  160. 160 invested Emotionally involved in something or genuinely caring about its outcome.
  161. 161 invitation A request for someone to attend an event or take part in something.
  162. 162 Iranian Relating to Iran, its people, or its culture.
  163. 163 import A product or good brought into a country from abroad for sale.
  164. 164 inventory The full stock of goods a business or location currently has.
  165. 165 Ip A Cantonese surname, romanized from the Chinese 葉/叶.
  166. 166 immune Protected against a disease, usually through vaccination or prior infection.
  167. 167 indication A sign or piece of evidence that shows something exists or is likely.
  168. 168 invisible Not able to be seen, either because it is hidden or because it does not reflect light.
  169. 169 inform To tell someone about facts or a situation.
  170. 170 inspection A careful, close examination of something.
  171. 171 illustrated Containing pictures or diagrams.
  172. 172 intend To have a plan or purpose in mind to do something.
  173. 173 indirect Not going straight to a point or goal; roundabout.
  174. 174 influential Having significant power to affect how things develop or how people think.
  175. 175 institutional Relating to, or typical of, an institution rather than an individual.
  176. 176 interim Temporary or provisional, filling a gap until something permanent is arranged.
  177. 177 installation The act of setting up equipment or software so it's ready for use.
  178. 178 intensive Involving a lot of effort or activity concentrated in a short period; thorough.
  179. 179 Iowa A Native American people originally from the region that is now the U.S. state of Iowa, or a member of this pe...
  180. 180 ignorance A lack of knowledge, information, or education about something.
  181. 181 independently In a way that does not depend on or is not influenced by someone or something else.
  182. 182 inevitable Certain to happen; impossible to avoid or prevent.
  183. 183 innovative Introducing new ideas or methods; creative and original.
  184. 184 ion An atom or molecule that has gained or lost electrons, giving it an electric charge.
  185. 185 Iraqi Relating to Iraq, its people, or its culture.
  186. 186 interactive Allowing back-and-forth engagement between a user and a system, or between people.
  187. 187 intermediate Positioned between two extremes, or partway through a course of learning.
  188. 188 intimate Very close and familiar, especially emotionally.
  189. 189 isolation The state of being separated or apart from others.
  190. 190 ignorant Lacking knowledge or education, generally or about a particular subject.
  191. 191 importantly Used to highlight a point as especially significant.
  192. 192 incorrect Wrong or not accurate.
  193. 193 insist To state something firmly and repeatedly, refusing to accept disagreement.
  194. 194 invention Something newly created or designed.
  195. 195 identifying Serving to show clearly who or what something is.
  196. 196 inappropriate Not suitable or fitting for the particular situation, time, or place.
  197. 197 interference The act of interfering with, or disrupting, something.
  198. 198 investing The practice of putting money into assets such as stocks, property, or a business to earn a return.
  199. 199 impose To officially establish or enforce a rule, tax, or penalty.
  200. 200 ink A colored liquid used for writing, drawing, or printing.
  201. 201 Isis An ancient Egyptian goddess of motherhood, magic, and fertility, worshipped as the wife of Osiris and mother o...
  202. 202 ignoring The act of deliberately paying no attention to someone or something.
  203. 203 imagined Existing only in someone's mind rather than in reality.
  204. 204 interpreted Computing: describing a program that is run directly from its source code, line by line, rather than being com...
  205. 205 Ive An English surname, and an informal short form of the female name Ivy.
  206. 206 inn A small hotel or pub, especially one in the countryside, offering food, drink, and lodging.
  207. 207 Instagram A social media platform for sharing photos and videos.
  208. 208 integral Essential to completeness; a necessary part of a whole.
  209. 209 irrelevant Not connected to or useful for the matter at hand.
  210. 210 ideology A connected set of beliefs, values, or principles held by a person, group, or movement, especially a political...
  211. 211 incentive Something that motivates or encourages a particular action.
  212. 212 instrumental Playing a key or essential role in making something happen.
  213. 213 intact Whole and undamaged; not touched or spoiled in any way.
  214. 214 intake The amount of something (food, air, liquid) that a person or system takes in.
  215. 215 interact To communicate or engage with someone, or to have an effect on each other.
  216. 216 internationally In a way that involves more than one country.
  217. 217 iPad Apple's tablet computer, a flat touchscreen device used for browsing, media, and light work without a keyboard...
  218. 218 indoor Located, used, or done inside a building.
  219. 219 ing A low meadow, especially one near a river; a water meadow (a dialect and historical term).
  220. 220 insert To put or fit something into something else.
  221. 221 instructor A person who teaches a particular skill or subject, especially a practical one.
  222. 222 insult To say or do something rude or disrespectful to someone.
  223. 223 inadequate Not enough, or not good enough, for what is required.
  224. 224 infant A very young child, roughly from birth up to around two years old.
  225. 225 informal Relaxed and casual rather than official or ceremonious.
  226. 226 injection The act of putting a liquid, especially medicine, into the body with a needle, or the dose given that way.
  227. 227 intel Informal word for intelligence — secret or useful information gathered about a situation.
  228. 228 imprisonment The state of being confined in prison, or a sentence involving such confinement.
  229. 229 inclusion The act of adding something to a group, or the state of being part of it.
  230. 230 inherited Received from a parent or ancestor, either as property or as a genetic trait.
  231. 231 illusion A false or misleading impression created by something that appears real.
  232. 232 infantry Soldiers who fight on foot, as opposed to those in tanks, on horseback, or in vehicles.
  233. 233 immigrant A person who moves from one country to live permanently in another.
  234. 234 indie Independent of major commercial studios, labels, or publishers.
  235. 235 Isaac In the Bible, the son of Abraham and Sarah, and father of Esau and Jacob.
  236. 236 inability Not having the skill, power, or resources needed to do something.
  237. 237 induced Brought about or triggered by some outside cause, rather than happening naturally on its own.
  238. 238 inspire To fill someone with the motivation or creative energy to do something.
  239. 239 innings In cricket, a team's or player's turn at batting, or the runs scored during it.
  240. 240 imaging The process or technology of producing images of things that can't normally be seen, especially inside the bod...
  241. 241 immunity The body's ability to resist a particular disease.
  242. 242 incomplete Not finished; missing one or more parts.
  243. 243 inequality An unfair difference in wealth, opportunity, or treatment between people or groups.
  244. 244 inevitably In a way that can't be avoided; as was bound to happen.
  245. 245 inherent Existing as a natural or essential part of something, rather than added on.
  246. 246 interfere To get involved in something in a way that disrupts or is unwelcome.
  247. 247 idol An object, often a statue or image, worshipped as a god or believed to hold spiritual power.
  248. 248 incoming Arriving or about to arrive.
  249. 249 indicator Something that shows or points to a condition, trend, or measurement.
  250. 250 Indonesian Relating to Indonesia, its people, or its language.
  251. 251 illustration A picture or diagram used to decorate or explain a text.
  252. 252 implied Suggested or hinted at rather than clearly stated.
  253. 253 impress To have a strong, often admiring, effect on someone.
  254. 254 inspiring Filling people with enthusiasm, motivation, or creative energy.
  255. 255 ivory The hard, creamy-white material that forms the tusks of elephants and some other animals.
  256. 256 immense Extremely large in size, degree, or amount.
  257. 257 imply To suggest something indirectly without stating it outright.
  258. 258 individually One at a time, separately, rather than as a group.
  259. 259 insufficient Not enough for what is needed.
  260. 260 Ivan A male given name of Slavic origin, the Slavic equivalent of "John."
  261. 261 inheritance Money, property, or possessions passed to someone after a person's death.
  262. 262 inland Located away from the coast, in the interior of a country.
  263. 263 Istanbul Turkey's largest city, straddling both Europe and Asia, and the former capital of the Byzantine and Ottoman Em...
  264. 264 incidence The rate at which something occurs, especially within a given group or period.
  265. 265 inclined Tilted at an angle; sloped.
  266. 266 interpret To explain or work out the meaning of something, especially a language, gesture, sign, or piece of art.
  267. 267 ins To insert something (informal, chiefly used in text-editing or shorthand contexts).
  268. 268 investor A person or organization that puts money into something, such as a business or the stock market, to earn a pro...
  269. 269 irony A situation or statement in which the actual outcome or meaning is the opposite of what was expected.
  270. 270 innocence The state of not being guilty of a crime or wrongdoing.
  271. 271 investigator A person whose job is to investigate something, such as a crime or accident.
  272. 272 inviting Attractive or tempting, making you want to come closer or take part.
  273. 273 imposing Impressive in size, appearance, or manner; commanding respect.
  274. 274 inclusive Covering everything within a given range, including both endpoints.
  275. 275 inconsistent Not staying the same over time; unpredictable or unreliable.
  276. 276 incorporate To include something as a part of a larger whole.
  277. 277 incumbent Currently holding an office or position.
  278. 278 infectious Able to be passed from one person or animal to another, usually through germs.
  279. 279 intersection A place where two or more roads or paths meet or cross.
  280. 280 indirectly In a roundabout way rather than straight or directly.
  281. 281 inferior Lower in rank, quality, or importance than something or someone else.
  282. 282 instinct A behavior or urge that comes naturally, without being learned.
  283. 283 interval A gap or space between two points, whether in time, distance, or a sequence.
  284. 284 ISO A file that contains an exact copy of everything on a disc, such as a CD or DVD, used to store or share softwa...
  285. 285 immortal Living forever; never dying.
  286. 286 imaginary Not real; existing only in the mind or imagination.
  287. 287 issuing The act of officially giving out, publishing, or releasing something.
  288. 288 ideological Relating to a system of ideas or beliefs, especially political or social ones.
  289. 289 intervene To become involved in a situation in order to change or stop what is happening.
  290. 290 ironic Involving irony — meaning, or resulting in, the opposite of what was expected or intended.
  291. 291 irrigation The supplying of water to land, usually through channels or pipes, so that crops can grow.
  292. 292 ideally In the best or most perfect way possible.
  293. 293 illustrate To explain or clarify something by using an example or comparison.
  294. 294 imagery Pictures or visual representations considered as a group, especially photos or scans.
  295. 295 initiate To start something, especially a formal process.
  296. 296 injustice Unfair treatment; the absence of justice.
  297. 297 inserted Placed or fitted into something else.
  298. 298 Ira A male given name of Hebrew origin, mostly used in America, meaning "watchful."
  299. 299 ironically In a way that involves irony; used to point out the ironic aspect of something being described.
  300. 300 ivy A climbing or trailing evergreen plant (genus Hedera) that clings to walls, trees, and fences.