0 a person who talks carelessly, often telling secrets to other people
1 a person who talks too much
Silence that blabbermouth; he does not know what he is talking about.
And it is just as wrong to let a blabbermouth work his way into security channels, even though the hour is such that he can do no immediate harm.
The man was a blabbermouth.
NOVÉ SLOVÁ
European
May 10, 2021
SLOVO DŇA
Shimmer
blabbermouth