open (one's) mouth

(redirected from opened his mouth)

open (one's) mouth

To say something, especially that which is indiscreet, boorish, or meant to be a secret. Why did you have to open your mouth about my crush on Tommy? Why couldn't you just keep it between us? You've got to make sure that he never opens his mouth about what went on here today.
See also: mouth, open
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

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
Farlex Partner Idioms Dictionary © Farlex 2017
See also:
References in classic literature ?
Little Toto, now that he had an enemy to face, ran barking toward the Lion, and the great beast had opened his mouth to bite the dog, when Dorothy, fearing Toto would be killed, and heedless of danger, rushed forward and slapped the Lion upon his nose as hard as she could, while she cried out:
And Anchises was seized with love, so that he opened his mouth and said:
For I ain't forgotten your handsome orders that I was never to go away without having had a good 'un off of meat and beer and pudding--no: there was four of 'em, for I reckoned 'em up when I had 'em; meat one, beer two, vegetables three, and which was four?--Why, pudding, HE was four!' Here Sloppy threw his head back, opened his mouth wide, and laughed rapturously.
On the grateful impulse of the moment, Mr Sloppy kissed Mrs Boffin's hand, and then detaching himself from that good creature that he might have room enough for his feelings, threw back his head, opened his mouth wide, and uttered a dismal howl.
He opened his mouth, but the black cloud sailed past and not as much as a drop of dew moistened his dry lips.
Joe, and put my mouth into the form of saying "her?" But Joe wouldn't hear of that, at all, and again opened his mouth very wide, and shook the form of a most emphatic word out of it.
Porthos opened his mouth, thinking it a good opportunity to put in a word in his turn; D'Artagnan checked him by a glance from the corner of his eye.
Richard Twining bubbled over with quaint absurdities, and George Road, conscious that he need not exhibit a brilliancy which was almost a by-word, opened his mouth only to put food into it.
Old Augustus, blinking good-naturedly, opened his mouth and in popped Wallace's head.
He never opened his mouth to his timid conqueror concerning the past; but he admitted him very near to his person in his labors, took him with him to several reconnoiterings, in such a way as to obtain that which he evidently warmly desired, -- a rehabilitation in the mind of D'Artagnan.
Summary: So Benjamin Netanyahu opened his mouth again and out came nonsense accusing the Palestinians of being behind the Holocaust.
He looked his usual grizzled and rugged self as he travelled down the Amazon and it was all going so well until he opened his mouth. Not so much a Bear Grylls growl, more a Joe Pasquale squeak.
Shakur would only reply: "F*** you." Speaking publicly for the first time, Officer Chris Carroll said: "He looked at me and he took a breath to get the words out, and he opened his mouth, and I thought I was actually going to get some co-operation.
He has removed all doubt just about every time he has opened his mouth publicly."
Patna : In a veiled threat to BJP leaders on the offensive against him after JD(U) parted ways with the NDA partner, Bihar chief minister Nitish Kumar on Monday said that if he opened his mouth many of them would be in trouble.