grind (one's) teeth

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grind (one's) teeth

To internalize one's anger without expressing it externally. The image is that of a person literally grinding their teeth together out of anger. Don't just sit there, grinding your teeth—if you're mad at me, let's talk about it.
See also: grind, teeth
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

grind your teeth

If someone grinds their teeth, they are angry about something, but do not express their anger. We journalists, who once were just like him, grind our teeth as we contemplate his success. Note: You can also talk about grinding of teeth, teeth-grinding, and tooth-grinding. There has been much grinding of teeth about what is seen by the government as the harshness of the European Community's decisions. When you are a little boy of nine, your father can seem like a hero one minute, only to cause you tooth-grinding embarrassment the next.
See also: grind, teeth
Collins COBUILD Idioms Dictionary, 3rd ed. © HarperCollins Publishers 2012
See also:
References in classic literature ?
"I am ready, monsieur," replied D'Artagnan, grinding his teeth.
A little girl named Dorothy, who was here with Ozma of Oz, stole my Belt and carried it away with her," said the King, grinding his teeth with rage.
"The infamous scoundrels!" exclaimed Joe, grinding his teeth, in one of those fits of rage that came over him at long intervals; "and to think that, in spite of all, this good man could find words only to pity them, to excuse, to pardon them!"
'Wolves tear your throats!' muttered Sikes, grinding his teeth.
"Ah, these are /men/, indeed; they will conquer again," called out Ignosi, who was grinding his teeth with excitement at my side.
And grinding his teeth again, Pyotr Petrovitch called himself a fool-- but not aloud, of course.
The dog was allegedly encouraged to keep biting at the same wounds by the officer who was said to be 'grinding his teeth' and 'out of control.'.
Instead of grinding his teeth all day on coarse material, he has been offered a huge excess of a mueslitype diet.
Rousey recounts his experience with former fire Catalog Man who had the habit of grinding his teeth with hers every time they kissed, which annoyed the Hollywood star.
Question: My rabbit Thumper has started grinding his teeth every now and then, why is he doing it?
" Treating the damaged teeth or wearing night guards will be of no use if the patient keeps grinding his teeth, " says Dr Kapoor.
YOU can practically hear the voice-over man grinding his teeth.
Q HOW can I stop my five-year-old son grinding his teeth at night?
When he's not singing he is doing a motorbike impression or grinding his teeth. Err--I'm so proud?
Elsworth claimed on the eve of the Oaks that he doesn't lose any sleep over the gap in his roll of honour, but he might have been grinding his teeth after believing Something Exciting had come to win the race up the long Epsom straight.