Antonyms: Adjective
judicious prudent sagacious sage sane sapient sensible sound wiseAntonyms: Verb
undeceivefab
EnglishMerriam-Webster DictionaryEnglishMerriam-Webster DictionaryExamples
Noun
- //those fools who ride motorcycles without wearing helmets
- //Only a fool would ask such a silly question.
- //You'd be a fool to believe what he tells you.
- //You're making yourself look like a fool.
Adjective
- //The dog was barking its fool head off.
- //Some fool driver kept trying to pass me!
Verb
- //When she first told us that she was getting married, we thought she was fooling.
- //His disguise didn't fool anybody.
- //He really had me fooled.
- //Stop fooling yourself—she doesn't really love you.
First Known Use
Noun
13th century, in the meaning defined at sense 1Adjective
13th century, in the meaning defined aboveVerb
circa 1529, in the meaning defined at intransitive sense 1aHistory and Etymology
Noun, Adjective, and Verb
Middle English, from Anglo-French fol, from Late Latin follis, from Latin, bellows, bag; akin to Old High German bolla blister, balg bag — more at bellyfool
adjective
Synonyms & Antonyms (Entry 1 of 3)
- showing or marked by a lack of good sense or judgment //he's always got some fool plan or otherSynonymsabsurd asinine balmy barmy [chiefly British] batty brainless bubbleheaded cockeyed crackbrained crackpot crazy cuckoo daffy daft dippy dotty fatuous featherheaded foolish fruity [slang] gaga half-baked half-witted harebrained inept insane jerky kooky (also kookie) loony (also looney) loony tunes (or looney tunes) lunatic [informal] lunkheaded mad meshuga (or meshugge also meshugah or meshuggah) nonsensical nutty preposterous sappy screwball senseless silly simpleminded stupid tomfool unwise wacko (also whacko) wacky (also whacky) weak-minded witless zanyRelated Wordsairheaded birdbrained boobish brain-dead chowderheaded chuckleheaded clueless dense dim dim-witted doltish dopey (also dopy) dorky [slang] dull dumb dunderheaded empty-headed feebleminded gormless [chiefly British] idiotic (also idiotical) imbecile (or imbecilic) knuckleheaded lamebrain (or lamebrained) mindless moronic oafish obtuse opaque pinheaded simple slow slow-witted soft softheaded thoughtless thick thickheaded unintelligent vacuousSynonymous Phrases
verb
Synonyms & Antonyms (Entry 2 of 3)
- to cause to believe what is untrue //I fooled him into thinking that we were driving to the store, not to his surprise birthday partySynonymsRelated WordsSynonymous Phrases