gnash one's teeth

idiom

Definition of gnash one's teeth 

1 : to grind one's teeth together He gnashed his teeth in his sleep.

2 : to show one is angry, upset, etc. His opponents have been gnashing their teeth in/with frustration since he won the election. His election has caused some weeping and gnashing of teeth among his opponents.

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Dictionary Entries near gnash one's teeth

gnarled

gnarly

gnash

gnash one's teeth

gnat

gnatcatcher

gnatflower

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