bigmouth

[ big-mouth ]
/ ˈbɪgˌmaʊθ /
SEE SYNONYMS FOR bigmouth ON THESAURUS.COM

noun, plural big·mouths [big-mouthz, -mouths] /ˈbɪgˌmaʊðz, -ˌmaʊθs/ for 1; (especially collectively) big·mouth, (especially referring to two or more kinds or species) big·mouths for 2.

a loud, talkative person, especially one who lacks discretion.
any of several fishes having an unusually large mouth.

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Origin of bigmouth

An Americanism dating back to 1885–90; big1 + mouth
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Words related to bigmouth

blowhard, boaster, brag, braggart, gossiper, know-it-all, windbag, bragger, swelled head, blusterer, gasbag, grandstander, show-off, trumpeter

British Dictionary definitions for bigmouth

bigmouth
/ (ˈbɪɡˌmaʊθ) /

noun

slang a noisy, indiscreet, or boastful person

Derived forms of bigmouth

big-mouthed, adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012