blabbermouth

noun

blab·​ber·​mouth ˈbla-bər-ˌmau̇th 

: a person who talks too much

especially : tattletale

Synonyms

• babbler
• blabber
• blowhard
• cackler
• chatterbox
• chatterer
• conversationalist
• gabbler
• gasbag
• jabberer
• jay
• magpie
• motormouth
• prattler
• talker
• windbag

Examples of blabbermouth in a Sentence

told the blabbermouth to put a lid on it

Recent Examples on the Web

Hsu had no problem playing an out-and-out villain for long stretches of that film, but her Ruby is more of an oblivious blabbermouth prone to shocking bouts of callousness, like failing to remember the names of people she’s inadvertently condemned to die. —Alison Herman, Variety, 19 Dec. 2024

They’re portrayed as gullible blabbermouths who spill everything the minute anyone shows public kindness. —David Fear, Rolling Stone, 5 Aug. 2024

Professional blabbermouth: that’s what most of these journalism degrees are really leading toward. —Hazlitt, 7 Feb. 2024

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, EW.com, 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, chicagotribune.com, 28 May 2017

Word History

First Known Use

1936, in the meaning defined above

Rhymes for blabbermouth

• bluetooth
• forsooth
• sawtooth
• tolbooth
• uncouth
• untruth
• vermouth
• luth
• muth
• sleuth
• sooth
• tooth

Kids Definition

blabbermouth

noun

blab·​ber·​mouth ˈblab-ər-ˌmau̇th 

: tattletale