noun

blabbermouth

BLAB-uh-mowth

noun

Someone who talks too much, especially someone who can't keep a secret.

"Don't tell Dave — he's a total blabbermouth."

"She got labeled a blabbermouth after spilling the news early."

How to Use Blabbermouth

Learner’s notes

In plain EnglishA person who can't hold their tongue and lets secrets or gossip out.

When to use it

Informal, often used half-jokingly.

blabbermouths plural

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Don't tell Dave — he's a total _____.

From blabber ("to reveal a secret carelessly") plus mouth.

south mouth youth uncouth vermouth badmouth Plymouth Falmouth bigmouth loudmouth Dartmouth Portsmouth