grind (one's teeth) together as a sign of anger (often used hyperbolically)
no doubt he is gnashing his teeth in rage

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Connections NYT: Hints For Today's Puzzle, Tue, Jan 13

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Today’s Wordle Answer Jan 13 #1669- NYT Wordle Hints & Updates

Today's NYT Pips Hints & Answers

Today's NYT Capture Hints & Answers

NYT Mini Crossword Answers Today - The Mini for Jan 13 Solved