Folly Definition

fŏlē
follies
noun
follies
A lack of understanding, sense, or rational conduct; foolishness.
Webster's New World
An act or instance of foolishness.
Regretted the follies of his youth.
American Heritage
Any foolish action or belief.
Webster's New World
Any foolish and useless but expensive undertaking.
Webster's New World
Wickedness or evil; also, lewdness.
Webster's New World

Other Word Forms of Folly

Noun

Singular:
folly
Plural:
follies

Origin of Folly

  • Middle English folie from Old French from fol foolish from Late Latin follis windbag, fool fool

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Old French folie (“madness”), from the adjective fol (“mad, insane”).

    From Wiktionary

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