blab·​ber·​mouth | \ ˈbla-bər-ˌmau̇th How to pronounce blabbermouth (audio) \

Definition of blabbermouth

: a person who talks too much especially : tattletale

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Examples of blabbermouth in a Sentence

told the blabbermouth to put a lid on it
Recent Examples on the Web 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, "'Soros': Film Review | Telluride 2019," 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, "Horoscope: March 08, 2017," 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, "Pitts: Why GOP must find courage to impeach Trump," 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,, "Quickly," 28 May 2017

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

1936, in the meaning defined above

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Time Traveler for blabbermouth Time Traveler

The first known use of blabbermouth was in 1936

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Cite this Entry

“Blabbermouth.” Dictionary, Merriam-Webster, Accessed 8 Mar. 2021.

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English Language Learners Definition of blabbermouth

informal : someone who reveals secrets or talks too much

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