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

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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Dictionary Entries near blabbermouth

blaauw wildebeest





blab school


Statistics for blabbermouth

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Time Traveler for blabbermouth

The first known use of blabbermouth was in 1936

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English Language Learners Definition of blabbermouth

informal : someone who reveals secrets or talks too much

More from Merriam-Webster on blabbermouth

Rhyming Dictionary: Words that rhyme with blabbermouth

Thesaurus: All synonyms and antonyms for blabbermouth

Spanish Central: Translation of blabbermouth

Comments on blabbermouth

What made you want to look up blabbermouth? Please tell us where you read or heard it (including the quote, if possible).


concealment of treason or felony

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