Synonyms for Foolish:


absurd (adjective)
absurd, anachronistic, bizarre, contradictory, crazy, eccentric, fallacious, farcical, idiotic, illogical, implausible, impossible, inane, incongruous, inconsistent, invalid, irrational, laughable, loony, ludicrous, meaningless, nonsensical, outlandish, paradoxical, preposterous, ridiculous, self-contradictory, senseless, silly.
daft (adjective)
foolish (adjective)
asinine, blithering, blockheaded, brainless, cretinous, dim-witted, doltish, dopey, dotty, dumb, goofy, half-witted, ignorant, imbecilic, loony, moronic, nitwit, crackpot, bone-headed, chuckle-headed, knuckle-headed, lame-brained, meat-headed, absurd, crazy, idiotic, inane, nonsensical.
harebrained (adjective)
ignorant (adjective)
empty-headed, illiterate, mindless, simple, uneducated, uninformed, unintelligent, unlearned, brainless, ignorant.
insane (adjective)
nonsensical, idiotic (adjective)
absurd, asinine, brainless, cockamamy, crazy, doltish, dotty, fatuous, half-witted, harebrained, imbecilic, insane, irrational, loony, ludicrous, lunatic, mad, moronic, preposterous, ridiculous, senseless, silly, simple, unintelligent, unreasonable, unwise, wacky, witless, zany, dippy.
ridiculous (adjective)
comical, curious, dubious, grotesque, incredible, laughable, oddball, outrageous, poppycock, weird, absurd, bizarre, crazy, eccentric, farcical, ludicrous, nonsensical, outlandish, preposterous, ridiculous, silly.
senseless (adjective)
shallow (adjective)
simple (adjective)
unintellectual (adjective)
defective, half-wit, unintellectual, cretinous, idiotic, imbecilic, moronic, unintelligent.
zany (adjective)


abashed, ashamed, contrite, embarrassed, guilty, repentant, sorry, uncomfortable, feel/look small. ability, hasty, impetuous, impulsive, insensate, irresponsible, planned, shallow, undiscriminating, unthinking, witless, Weak-minded. balmy, cockeyed, knowledge, loopy, lunatic, softheaded, tomfool, unearthly, dippy. foolish (noun)
absurd, anserine, asinine, cockamamie, cockamamy, derisory, dopey, dopy, fatuous, fond, fool, goofy, gooselike, goosey, goosy, harebrained, ill-conceived, inane, insane, laughable, ludicrous, mad, mindless, misguided, nonsensical, preposterous, rattlebrained, rattlepated, ridiculous, sappy, scatterbrained, scatty, silly, unreasonable, unwise, vacuous, wacky, whacky, zany.
silly (noun)
study at absurd.

Other synonyms:

abashed, ashamed, contrite, embarrassed, guilty, loopy, repentant, softheaded, sorry, uncomfortable, undiscriminating, unthinking, witless, dippy. cockeyed, impetuous, impulsive, irresponsible, shallow, Weak-minded. lunatic. unearthly. crazy
Other relevant words:
abashed, ability, absurd, anserine, ashamed, balmy, cockamamie, cockamamy, cockeyed, contrite, derisory, dopy, embarrassed, fatuous, fond, fool, gooselike, goosey, goosy, guilty, harebrained, hasty, ill-conceived, impetuous, impulsive, insane, insensate, irresponsible, knowledge, loopy, lunatic, mad, misguided, planned, rattlebrained, rattlepated, repentant, sappy, scatterbrained, scatty, shallow, softheaded, sorry, tomfool, uncomfortable, undiscriminating, unearthly, unreasonable, unthinking, unwise, vacuous, wacky, whacky, witless, zany, Weak-minded, dippy.

Usage examples for foolish

  1. He is not the sort of man to do foolish things, and that is foolish on the face of it. – The Grell Mystery by Frank Froest
  2. John, don't be foolish – John Halifax, Gentleman by Dinah Maria Mulock Craik
  3. Oh, you foolish boy! – The Awakening of Helena Richie by Margaret Deland