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Synonyms

foolish

American  
[foo-lish] / ˈfu lɪʃ /

adjective

  1. resulting from or showing a lack of sense; ill-considered: unwise.

    a foolish action;

    a foolish speech.

    Synonyms:
    thoughtless, imprudent, preposterous, nonsensical, absurd, ridiculous, unintelligent, senseless, brainless, witless, stupid
  2. lacking forethought or caution.

    Synonyms:
    thoughtless, imprudent, incautious, heedless, half-baked, foolhardy, reckless, rash, impetuous
  3. trifling, insignificant, or paltry.

    Synonyms:
    picayune, trivial

foolish British  
/ ˈfuːlɪʃ /

adjective

  1. unwise; silly

  2. resulting from folly or stupidity

  3. ridiculous or absurd; not worthy of consideration

  4. weak-minded; simple

  5. an archaic word for insignificant

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

foolish Idioms  

Usage

What are other ways to say foolish? A foolish action is one that shows a lack of sense or is ill-considered. How is foolish different from fatuous, silly, inane, stupid, and asinine? Find out on Thesaurus.com. 

Other Word Forms

  • foolishly adverb
  • foolishness noun
  • overfoolish adjective
  • overfoolishly adverb
  • quasi-foolish adjective
  • quasi-foolishly adverb
  • unfoolish adjective
  • unfoolishly adverb

Etymology

Origin of foolish

First recorded in 1250–1300; from Middle English folish, foolish; fool 1, -ish 1

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.

“You go if you want. I do not care anymore. I cannot stop you, I know that now. It was foolish of me to think that I could. But we are staying here.”

From Literature

It was the kind of foolish, farmerish enterprise that appealed to him.

From Literature

“My neighbor—Mrs. Lindy? She’s a foolish woman. Nothing better to do than spy out her own window.”

From Literature

“It would be foolish to ignore the full distribution of geopolitical risk,” writes Philipp Carlsson-Szlezak, global chief economist at Boston Consulting Group.

From Barron's

Celia said it’s brave that I “owned my goal,” but maybe it’s actually foolish.

From Literature