bigmouth

American  

[big-mouth] / ˈbɪgˌmaʊθ /

noun

plural

bigmouths,

plural

bigmouth,

plural

bigmouths

1. a loud, talkative person, especially one who lacks discretion.

2. any of several fishes having an unusually large mouth.

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bigmouth British  

/ ˈbɪɡˌmaʊθ /

noun

1. slang a noisy, indiscreet, or boastful person

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Other Word Forms

• big-mouthed adjective

Etymology

Origin of bigmouth

An Americanism dating back to 1885–90; big ¹ + mouth

Example Sentences

Minnesota has native populations of each of the three species studied: bigmouth buffalo, smallmouth buffalo and black buffalo.

From Science Daily • Oct. 30, 2023

On Good Morning America, a tech bigmouth named Bob Metcalfe claimed he’d seen IT, and IT was bigger than the internet.

From Slate • Aug. 1, 2021

But we should not go on and on, pretending that this is just another felonious bigmouth who doesn’t deserve to serve.

From Washington Times • May 4, 2021

Elect the bigmouth know-it-all from the break room at work: First, they already know what is wrong with everything and how to fix it.

From Washington Post • Aug. 10, 2016

David Schramm, his shirt heavily streaked with sweat, flails and bellows as a gum-chomping bigmouth whose amusing bluster gradually curdles into a revelation of utter bigotry.

From New York Times • Mar. 31, 2012