knuck·​le·​head | \ˈnə-kəl-ˌhed \

Definition of knucklehead 

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Other Words from knucklehead

knuckleheaded \ ˈnə-​kəl-​ˌhed-​əd \ adjective

Synonyms & Antonyms for knucklehead


airhead, birdbrain, blockhead, bonehead, bubblehead, chowderhead, chucklehead, clodpoll (or clodpole), clot [British], cluck, clunk, cretin, cuddy (or cuddie) [British dialect], deadhead, dim bulb [slang], dimwit, dip, dodo, dolt, donkey, doofus [slang], dope, dork [slang], dullard, dum-dum, dumbbell, dumbhead, dummkopf, dummy, dunce, dunderhead, fathead, gander, golem, goof, goon, half-wit, hammerhead, hardhead, idiot, ignoramus, imbecile, jackass, know-nothing, lamebrain, loggerhead [chiefly dialect], loon, lump, lunkhead, meathead, mome [archaic], moron, mug [chiefly British], mutt, natural, nimrod [slang], nincompoop, ninny, ninnyhammer, nit [chiefly British], nitwit, noddy, noodle, numskull (or numbskull), oaf, pinhead, prat [British], ratbag [chiefly Australian], saphead, schlub (also shlub) [slang], schnook [slang], simpleton, stock, stupe, stupid, thickhead, turkey, woodenhead, yahoo, yo-yo


brain, genius

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Examples of knucklehead in a Sentence

Don't be such a knucklehead. I'd like to get my hands on the knucklehead who designed that paper-towel dispenser.

Recent Examples on the Web

James does everything – e-e-e-verything – in Game 1, only to have a knucklehead teammate not know the score at the most important time. Paul Daugherty,, "Paul Daugherty's Morning Line: You can't make the MLB Draft fun and Allegiant Air sucks," 4 June 2018 Poverty, a childhood spent in trailers, and knucklehead friends are all part of the campy atmosphere. Kyle Smith, National Review, "What If Tonya Harding Were Black?," 11 Jan. 2018 McDonagh’s dialogue freely commingles wry knucklehead wit with fatalist musings on mortality and the Great Beyond. Charles Bramesco, New York Times, "The Little Lebowskis: 10 Righteous Heirs to a Coen Brothers’ Classic," 6 Mar. 2018 Bauman is desperate to go back to being a knucklehead with his buddies. A.o. Scott & Wesley Morris, New York Times, "The 10 Best Actors of the Year," 7 Dec. 2017 Eliminating knucklehead penalties Running back Rashaad Penny let his emotions get the best of him on a 4-yard touchdown run just before halftime against Stanford. Kirk Kenney,, "5 Things to watch: Aztecs at Air Force," 22 Sep. 2017 For those unaware, Arkansas coach Bret Bielema called my colleague Trent Shadid a knucklehead during his coach’s show last Thursday. Eric Bolin, ajc, "Will Bielema go off on media after Hammonds and Allen benching, and Kelley’s arrest?," 13 Nov. 2017 There’s all sorts of antifa, ranging from those who valiantly protected pastors and rabbis in Charlottesville to knuckleheads who get a thrill from throwing a rock at Starbucks. Will Bunch,, "Government wants to crush your right to protest - because there's so much stuff to protest about | Will Bunch," 31 Aug. 2017 Lon Elmer, Seattle, Washington Pyne was a bully and a knucklehead on the air, but there was something that made me watch him for the laughs. Smithsonian, "Discussion," 29 July 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'knucklehead.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of knucklehead

1942, in the meaning defined above

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The first known use of knucklehead was in 1942

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English Language Learners Definition of knucklehead

: a stupid person

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full of whispering sounds

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