lunacy

noun/ˈluːnəsi/

Frequency rank: #14,225 most common English word

Meaning

extreme foolishness or madness; behavior that seems completely crazy.

Illustration for the English word “lunacy”

Example sentence

People thought it was pure lunacy to quit a stable job without any backup plan.

Synonyms & related words

Practice this word in the quiz

More words in ranks 14,201–14,300