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Showing results for insanity. Search instead for insanity/3.
Definitions

insanity

[in-san-i-tee] / ɪnˈsæn ɪ ti /
NOUN
mental illness; foolishness
Synonyms
STRONGEST
absurdity alienation craziness folly frenzy hysteria irresponsibility lunacy madness mental disorder
STRONG
aberration delirium delusion derangement distraction hallucination irrationality mania neurosis phobia psychopathy psychosis senselessness unbalance
WEAK
preposterousness unreasonableness witlessness
Antonyms
STRONG
balance certainty fact reality truth
WEAK
sanity soundness wellness

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

In June 1982, Hinckley was found not guilty by reason of insanity and sent to a psychiatric facility; he was fully released from federal custody in 2022.

From The Wall Street Journal • Mar. 30, 2026

This allows events to balloon beyond our comprehension, and may be preventing us from stopping this insanity.

From Salon • Mar. 25, 2026

Only a jury can return a verdict of "not guilty by reason of insanity".

From BBC • Mar. 20, 2026

“I don’t get where all this insanity is coming from.”

From MarketWatch • Feb. 3, 2026

What insanity had made her get Ethel floated?

From "East of Eden" by John Steinbeck

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.