blab·​ber·​mouth ˈbla-bər-ˌmau̇th How to pronounce blabbermouth (audio)
: a person who talks too much
especially : tattletale

Examples of blabbermouth in a Sentence

told the blabbermouth to put a lid on it
Recent Examples on the Web The new footage seemingly leaked online on TikTok on Sunday — for once, notorious blabbermouth Holland wasn't to blame — but the official trailer still had more than a few surprises, including the return of Alfred Molina's Doctor Octopus and Willem Dafoe's Green Goblin. Devan Coggan,, 24 Aug. 2021 George Soros, a demon to many right-wing blabbermouths, must be one of the most misunderstood men on the contemporary scene. Stephen Farber, The Hollywood Reporter, 6 Sep. 2019 PISCES (Feb. 19-Mar. 20): Sharing a secret with a blabbermouth is as bad as spilling the beans yourself. Jeraldine Saunders, The Mercury News, 8 Mar. 2017 So Trump’s blabbermouth will likely chill our relationship with that third party and shut off that and other valuable sources of information. Leonard Pitts Jr, The Mercury News, 17 May 2017 The leaks are coming from the disgruntled staff in the White House and the president himself, who is a blabbermouth. Chicago Tribune,, 28 May 2017

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'blabbermouth.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1936, in the meaning defined above

Time Traveler
The first known use of blabbermouth was in 1936

Dictionary Entries Near blabbermouth

Cite this Entry

“Blabbermouth.” Dictionary, Merriam-Webster, Accessed 29 Nov. 2023.

Kids Definition


blab·​ber·​mouth ˈblab-ər-ˌmau̇th How to pronounce blabbermouth (audio)
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