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1. Lacking or exhibiting a lack of good sense or judgment; silly: a foolish boy; a foolish purchase.
2. Capable of arousing laughter; absurd or ridiculous: a foolish grin.
3. Embarrassed; abashed: I feel foolish telling you this.
4. Insignificant; trivial: foolish little knickknacks.

fool′ish·ly adv.
fool′ish·ness n.
Synonyms: foolish, absurd, fatuous, ludicrous, preposterous, ridiculous, silly
These adjectives are applied to people or things that show an absence of good judgment or common sense: a foolish expenditure of energy; an absurd idea that is bound to fail; fatuous optimism that does not take the real problem into account; dismissed her ludicrous criticism; a preposterous excuse that no one believed; offered a ridiculous explanation for his tardiness; a silly argument.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.




  1. A blockhead is as ridiculous when he talks as is a goose when it flies —Lord Halifax

    The words ‘talks’ and ‘flies’ have been modernized from the old English ‘talketh’ and ‘flieth.’

  2. Comparing them [American and Oriental women] is like comparing oven broilers and banties —Bobbie Ann Mason
  3. Felt foolishness drag like excess flesh on his face —Sharon Sheehe Stark
  4. Foolish as to cut off the head to preserve the hair —Anon

    An alternative to the cliche, “As foolish as to cut off your nose to spite your face.”

  5. Foolish as to judge a horse by its harness —Anon
  6. A fool is like other men as long as he is silent —Jacob Cats
  7. A fool … says little, but that little said owes all its weight, like loaded dice, to lead —William Cowper
  8. Gullible as geese —Anon
  9. How foolish one would be to climb into the ring with love and try to trade blows with him, like a boxer —Sophocles
  10. If all fools wore white caps, we should look like a flock of geese —Proverb
  11. I’ll not be a fool like the nightingale who is up till midnight without any ale —Dylan Thomas
  12. Life’s little suckers chirp like crickets while spending all on losing tickets —Ogden Nash
  13. Lightheaded as a thistle —Mary Lavin

    See Also: LIGHTNESS

  14. A man who commits suicide is like a man who longs for a gate to be opened and who cuts his throat before he reaches the gate —Dylan Thomas
  15. Senseless … it’s like wearing a bulletproof vest with a hole over the heart —Senator John Heinz, December, 1985 news item
  16. Unrealistic … like someone who eats like a linebacker but yearns for the shape of a fashion model —Anon
Similes Dictionary, 1st Edition. © 1988 The Gale Group, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.foolishness - the trait of acting stupidly or rashlyfoolishness - the trait of acting stupidly or rashly
trait - a distinguishing feature of your personal nature
indiscretion, injudiciousness - the trait of being injudicious
fatuity, fatuousness, silliness, absurdity - a ludicrous folly; "the crowd laughed at the absurdity of the clown's behavior"
asininity - the quality of being asinine; stupidity combined with stubbornness
2.foolishness - the quality of being rash and foolish; "trying to drive through a blizzard is the height of folly"; "adjusting to an insane society is total foolishness"
stupidity - a poor ability to understand or to profit from experience
3.foolishness - a stupid mistakefoolishness - a stupid mistake      
error, fault, mistake - a wrong action attributable to bad judgment or ignorance or inattention; "he made a bad mistake"; "she was quick to point out my errors"; "I could understand his English in spite of his grammatical faults"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.


1. stupidity, irresponsibility, recklessness, idiocy, weakness, absurdity, indiscretion, silliness, inanity, imprudence, rashness, foolhardiness, folly, bêtise (rare) the foolishness of dangerously squabbling politicians
2. nonsense, carrying-on (informal, chiefly Brit.), rubbish, trash, bunk (informal), claptrap (informal), rigmarole, foolery, bunkum or buncombe (chiefly U.S.) There's no shortage of foolishness.
"Mix a little foolishness with your prudence; it's good to be silly at the right moment" [Horace Odes]
Collins Thesaurus of the English Language – Complete and Unabridged 2nd Edition. 2002 © HarperCollins Publishers 1995, 2002


The American Heritage® Roget's Thesaurus. Copyright © 2013, 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
غَباء، حَماقَه، سَخافَه


[ˈfuːlɪʃnɪs] Ninsensatez f, estupidez f
Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005


[ˈfuːlɪʃnɪs] nstupidité f
Collins English/French Electronic Resource. © HarperCollins Publishers 2005


nDummheit f; enough of this foolishnesslassen wir diese Dummheiten
Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007


[ˈfuːlɪʃnɪs] nstupidità
Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995


(fuːl) noun
a person without sense or intelligence. He is such a fool he never knows what to do.
1. to deceive. She completely fooled me with her story.
2. (often with about or around) to act like a fool or playfully. Stop fooling about!
ˈfoolish adjective
1. having no sense. He is a foolish young man.
2. ridiculous. He looked very foolish.
ˈfoolishly adverb
ˈfoolishness noun
ˈfoolhardy adjective
taking foolish risks; rash. He made a foolhardy attempt to climb the mountain in winter.
ˈfoolhardiness noun
ˈfoolproof adjective
unable to go wrong. His new plan seems completely foolproof.
make a fool of
to make (someone) appear ridiculous or stupid. He made a real fool of her by promising to marry her and then leaving her when he had spent all her money.
make a fool of oneself
to act in such a way that people consider one ridiculous or stupid. She made a fool of herself at the party.
play the fool
to act in a foolish manner, especially with the intention of amusing other people. He always played the fool when the teacher left the classroom.
Kernerman English Multilingual Dictionary © 2006-2013 K Dictionaries Ltd.


n. tontería, bobería.
English-Spanish Medical Dictionary © Farlex 2012
References in classic literature ?
Come right out and tell me you've found out somehow what a shape I'm in on account of dissipation and foolishness."
"She'd better 'a' been takin' in sewin' and earnin' money, 'stead o' blindin' her eyes on such foolishness as quilted counterpanes," said Mrs.
It is a great foolishness and without understanding."
More potent intoxicants these than any that need licenses for their purveyance, responsible-- see the poets--for no end of human foolishness.
Umslopogaas had told her that she must not do this, and she had forgotten his words in her foolishness. Perhaps she could move the stone; no, not by the breadth of a grain of corn.
It's a pity she's a Methodist; but there's no getting a woman without some foolishness or other."
"'Tis foolishness, of course," said he, roughly, "but I'd be cut up some meself if our little Pat was kidnapped or anything.
It was the best of times, it was the worst of times, it was the age of wisdom, it was the age of foolishness, it was the epoch of belief, it was the epoch of incredulity, it was the season of Light, it was the season of Darkness, it was the spring of hope, it was the winter of despair, we had everything before us, we had nothing before us, we were all going direct to Heaven, we were all going direct the other way--in short, the period was so far like the present period, that some of its noisiest authorities insisted on its being received, for good or for evil, in the superlative degree of comparison only.
But there was some foolishness here; she was come without the knowledge of her husband, as her furtive manner indicated, to a meeting she dreaded and was ashamed to tell him of; she was come into danger; then it must be to save, not herself but him; the folly to be concealed could never have been Mary's.
"You two talk as much foolishness as ever you did," said old Mrs.
And spurious wisdom: so doth it call all the wit that slaves, and hoary- headed and weary ones affect; and especially all the cunning, spurious- witted, curious-witted foolishness of priests!
"As to your foolishness and awkwardness, my dear Fanny, believe me, you never have a shadow of either, but in using the words so improperly.