bird·​brain | \ˈbərd-ˌbrān \

Definition of birdbrain 

1 : a stupid person

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Other Words from birdbrain

birdbrained \ ˈbərd-​ˌbrānd \ adjective

Synonyms & Antonyms for birdbrain


airhead, 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, knucklehead, 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 birdbrain in a Sentence

Her brother's a real birdbrain. those birdbrains who eagerly adopt every fad diet that comes along

Recent Examples on the Web

Some cowardly birdbrain dropping Ku Klux Klan fliers in a quiet, suburban neighborhood may not be earth-shattering news. Washington Post, "Ku Klux Klan fliers — and the hatred they represent — can’t be ignored," 15 Jan. 2018 Calling someone a birdbrain meant there wasn’t much going on upstairs. National Geographic, "Here's Why 'Birdbrain' Should Be a Compliment," 15 May 2016 Calling someone a birdbrain meant there wasn’t much going on upstairs. National Geographic, "Here's Why 'Birdbrain' Should Be a Compliment," 15 May 2016

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'birdbrain.' 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 birdbrain

1933, in the meaning defined at sense 1

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Time Traveler for birdbrain

The first known use of birdbrain was in 1933

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English Language Learners Definition of birdbrain

: a stupid person

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noxious or harmful

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