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Showing results for insane.
Definitions

insane

[in-seyn] / ɪnˈseɪn /
ADJECTIVE
mad
Synonyms
STRONGEST
crazy delirious demented deranged frantic frenzied kooky nutty
WEAK
aberrant bananas batty crazed cuckoo daft frenetic loony lunatic non compos mentis of unsound mind off one's rocker out of one's mind raving unbalanced unhinged unsound unstable
Antonyms
STRONGEST
balanced calm collected rational reasonable sane sensible wise
WEAK
OK sound unenthusiastic

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.

Grieving is also time to get angry and justified in your own insane behavior.

From Slate • Apr. 23, 2026

It sounds borderline insane to consider that the only available team in America’s second-largest market might not be worth as much as the team that just sold in America’s 30th-largest market.

From Los Angeles Times • Apr. 17, 2026

“All of us are going through this insane geopolitical time,” Sullivan says.

From Barron's • Apr. 15, 2026

Those stories are so real and it is insane.

From The Wall Street Journal • Apr. 3, 2026

We heard him tell the property manager the solitude was driving him insane.

From "The Old Willis Place" by Mary Downing Hahn

Vocabulary lists containing insane

salu, san (health)

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