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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

“There is this insane new piece of technology that is fundamentally going to rewire how we work. Some companies are going to make it, some companies are not,” Huang said.

From The Wall Street Journal • Apr. 14, 2026

He said that people have offered him insane amounts of money for Coachella.

From Los Angeles Times • Apr. 10, 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

Maybe insane is what it takes to scare away someone like Gillicut.

From "Invisible Inkling" by Emily Jenkins

Vocabulary lists containing insane

salu, san (health)

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