not open (one's) mouth

(redirected from not open his mouth)

not open (one's) mouth

To be completely silent; to remain discreet (about something); to not tell anyone (about something). All the while our teacher was shouting at us, we didn't open our mouths. Don't open your mouth about this! I would die of embarrassment if anyone were to find out.
See also: mouth, not, open

not open one's mouth

 and not utter a word
Fig. not to say anything at all; not to tell something (to anyone). Don't worry, I'll keep your secret. I won't even open my mouth. Have no fear. I won't utter a word.
See also: mouth, not, open

not open one's mouth

Also, shut one's mouth; not say or utter a word . Be silent, repress one's feelings or opinions, keep a secret. For example, Don't worry, I'm not going to open my mouth on this issue, or She promised not to say a word about it to anyone. Also see hold one's tongue; keep one's mouth shut.
See also: mouth, not, open

open your (big) ˈmouth

(informal) say something when you should not: Why do you always have to open your big mouth? Can’t you just keep quiet sometimes?
See also: mouth, open
References in classic literature ?
When Dorothy presently asked him a question the Tin Woodman could not open his mouth, for his jaws were tightly rusted together.
Fix, as he bowed, had a stifled feeling, and, going forward, where he ensconced himself, did not open his mouth for the rest of the day.
Yet he durst not open his mouth, and drove in silence till they had passed the main park-gates and turned into the cross-cut lane along the wall.
Then she realised her 10-year-old pet could not open his mouth.
He was so weak he could not open his mouth or stand up and when he was taken back to a local house he refused all food and water offered to him.
Here the under-investigation Harris, who did not open his mouth until an hour and 15 minutes into proceedings, took the "his mistake is not my mistake" approach to their scapegoating of Nason, who was not here but can rarely have been discussed in such detail.
He would not open his mouth in a police interview, then pretended to be sick into a bin.
Going one step further, Webb said that being Scottish, Ferguson is lazy and as a result, does not open his mouth completely while speaking.
But I could not open his mouth, so I took the axe and hit him on his head," Maksudova said.
In fact, during his first court appearance, he became so paralyzed with fear that he could not open his mouth.
On a theological level, Jesus embodies the Suffering Servant of Isaiah 53:7: "He was oppressed and he was afflicted, yet he did not open his mouth; like a lamb that is led to the slaughter, and like a sheep that before its shearers is silent, so he did not open his mouth.
A child who is incorrigible, with the proverbial "chip on his shoulder," who will not open his mouth and who makes drastic expostulations, must necessarily be dealt with alone.
Why did he not open his mouth about the shortcomings in the NHS when he was being highly -paid?
But it had worsened by morning and he could not open his mouth fully.