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Definitions

insanity

[in-san-i-tee] / ɪnˈsæn ɪ ti /


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.

Isn’t there a saying about insanity is repeating the same mistakes over and over and expecting a different result?

From Los Angeles Times • Jun. 6, 2026

Barabak: A popular expression — which Steyer mentioned — defines insanity as doing the same thing over and over and expecting a different result.

From Los Angeles Times • May 15, 2026

Companies can spark temporary insanity by just saying some magic words.

From The Wall Street Journal • Apr. 16, 2026

She was reportedly found not responsible by reason of insanity.

From BBC • Apr. 15, 2026

Where the unhinged once came to offer their prayers, scholars now gather to research the collective insanity of war.

From "Atonement" by Ian McEwan




Vocabulary lists containing insanity


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