Definition of open one's mouth in English:

open one's mouth

informal Say something: sorry, I’ll never open my mouth about you again
More example sentences
  • I try to assume less before opening my mouth or offering information.
  • You didn't even manage to get accurate information before you opened your mouth.
  • After spending a great deal of the 1990s making speeches on education, I took a vow never to open my mouth on the subject again, at least in public.
See parent entry: mouth

Definition of open one's mouth in:

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day deictic
Pronunciation: ˈdeɪktɪk
denoting a word whose meaning depends on context...