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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.

“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

"It was my dream to work with Vogue and have my 'Devil Wears Prada' moment so to be able to now say that I am a Vogue-published photographer, truly is insane."

From BBC • Mar. 26, 2026

What about a melty, fluffy egg that has an insane cheese pull?

From Salon • Mar. 21, 2026

Still—though it would be insane, I knew, to mention it at that moment—it was possible that he had food poisoning or appendicitis or something.

From "The Secret History" by Donna Tartt

Vocabulary lists containing insane

salu, san (health)

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