noun
insomniac
ihn-SOM-nee-ak
Insomniac (noun) means a person who has trouble sleeping, especially on a regular basis. Example: “As an insomniac, he was used to being awake at 3am.”
noun
1
A person who has trouble sleeping, especially on a regular basis.
"As an insomniac, he was used to being awake at 3am."
adjective
1
Relating to or suffering from insomnia.
"She spent her insomniac nights reading old paperbacks."
How to use insomniac
Learner’s notesIn plain EnglishSomeone who regularly struggles to sleep, or something related to that struggle.
Vocabulary Flow
Build your vocabulary from words like insomniac.
Vocabulary Flow serves the next word, and the next — meaning, pronunciation and an example each time. Practice at your level, or learn English in your own language.
Start vocabulary practice
Word forms
- Plural
- insomniacs
Fill the gap
Can you complete this real example?
As an _____, he was used to being awake at 3am.
Etymology
From insomnia + the noun/adjective suffix -ac.
Synonyms
View more →Related words
Rhymes for insomniac
zodiac
cardiac
Pontiac
amnesiac
brainiac
egomaniac
pyromaniac
aphrodisiac
kleptomaniac
megalomaniac
nymphomaniac
hypochondriac
See all rhymes for insomniac →
Frequently asked questions
What does “insomniac” mean?
The word “insomniac” means a person who has trouble sleeping, especially on a regular basis. In plain terms, someone who regularly struggles to sleep, or something related to that struggle.
How do you pronounce “insomniac”?
“Insomniac” is pronounced ihn-SOM-nee-ak (/ɪnˈsɒm.ni.æk/ in IPA).
How do you use “insomniac” in a sentence?
Here is “insomniac” used in a sentence: “As an insomniac, he was used to being awake at 3am.”
What part of speech is “insomniac”?
Depending on how it is used, “insomniac” can be a noun and an adjective.
How many meanings does “insomniac” have?
“Insomniac” has 2 distinct senses listed in this dictionary. The most common is: a person who has trouble sleeping, especially on a regular basis.
