She is such a blabbermouth, always spreading gossip.
loose lips
Frequency:
60
%
Watch what you say around her, she has loose lips like a blabbermouth.
big mouth
Frequency:
50
%
He can't keep a secret, he's such a big mouth blabbermouth.
chatterbox
Frequency:
45
%
I can't stand being around that chatterbox blabbermouth.
Idiomatic Expressions for blabbermouth
Phrase: She's known as the office blabbermouth
Meaning: Someone who gossips or talks too much, especially about others.
Usage: Describing someone who can't keep a secret or talks excessively about others.