idiot
186 synonyms and 2 antonyms for idiot, grouped by meaning and by how common each one is.
Noun — A foolish or stupid person, or someone who makes a very poor decision.
Synonyms
Everyday swaps
Common words most readers know — safe in any writing.
Less common
Still standard English, but they carry more weight.
Rare, literary or technical
Precise, but they will stand out — check the sense before using one.
Antonyms
How to use idiot
The word patterns that sound natural to a native speaker.
Considered offensive when used clinically about intellectual disability; today it's almost always just a casual insult.
Etymology
From Greek idiotes, originally meaning an ordinary private citizen with no special skill or office, later narrowing to mean an ignorant or foolish person.
Full origin of idiot →Frequently asked questions
What does “idiot” mean?
The word “idiot” means a foolish or stupid person, or someone who makes a very poor decision. In plain terms, a strongly informal, often insulting word for someone acting foolishly.
How do you pronounce “idiot”?
“Idiot” is pronounced IH-dee-uht (/ˈɪdiət/ in IPA).
How do you use “idiot” in a sentence?
Here is “idiot” used in a sentence: “Only an idiot would leave the front door unlocked all night.”
What is another word for “idiot”?
Words with a similar meaning to “idiot” include addle-brain, addlehead, addle pate, airhead, baboon and beanbrain.
What is the opposite of “idiot”?
The opposite of “idiot” — its antonyms — are genius and intelligent person.
What part of speech is “idiot”?
“Idiot” is a noun.
Where does the word “idiot” come from?
The word “idiot” comes from Greek. From Greek idiotes, originally meaning an ordinary private citizen with no special skill or office, later narrowing to mean an ignorant or foolish person.
Is “idiot” a common word?
“Idiot” is a fairly common word in modern English, usually learned at around the B2 level.
Is calling someone an idiot offensive?
Yes. "Idiot" is an insult that labels someone as foolish or stupid, and directing it at a person will usually cause offence. Between close friends it is sometimes used playfully ("you idiot!"), but tone and context carry all the weight, so it is best avoided in formal or professional settings.
What is the difference between an idiot and a fool?
Both words describe someone who acts stupidly, but "fool" tends to emphasise poor judgment or being easily deceived, while "idiot" is blunter and stresses a lack of intelligence or a very poor decision. "Fool" also sounds slightly more old-fashioned and appears in set phrases like "make a fool of yourself."
What is the difference between idiot and moron?
In everyday modern English the two are largely interchangeable insults for a foolish or stupid person. Neither word has any technical or medical meaning today, and both are considered rude when aimed at a real person.
Can idiot be used affectionately?
It can, but only in clearly playful contexts between people who know each other well, as in "You idiot, you nearly gave me a heart attack!" Without that warmth of tone, the word reads as a straightforward insult, so it should never be used affectionately with strangers or in writing where tone is hard to judge.