loudmouth /ˈlaʊdˌmaʊθ/ noun plural loudmouths
plural loudmouths
Learner's definition of LOUDMOUTH
[count] informal + disapproving
: a loud person : a person who talks too much and who says unpleasant or stupid things多嘴饶舌的人;喋喋不休的人
— loudmouthed
/ˈlaʊdˌmaʊθt/ adjective [more loudmouthed; most loudmouthed]