Idiot

/ˈɪd.i.ət/

Meaning & Definition

noun
A person of low intelligence; a fool.
He acted like an idiot during the presentation, forgetting all his lines.
A person who is perceived to be behaving foolishly or senselessly.
Don't be such an idiot; think before you speak!
An informal term for someone lacking common sense.
She called him an idiot for driving without a seatbelt.

Etymology

From Latin 'idiota', from Greek 'idiotes' meaning 'private citizen' or 'layman'.

Common Phrases and Expressions

Acting like an idiot
Behavior that is considered foolish or unreasonable.
Idiot savant
A person who has a mental disability but is exceptionally talented in certain areas.

Related Words

fool
A person who acts unwisely.
moron
A mentally deficient person.

Slang Meanings

Numbnuts
Don't be a numbnuts and keep making the same mistakes.
Dingbat
He’s such a dingbat for forgetting our plans again.