American English

Definition of gnash verb from the Oxford Advanced American Dictionary



Verb Forms present simple I / you / we / they gnash
he / she / it gnashes
past simple gnashed
-ing form gnashing
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gnash your teeth
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to feel very angry and upset about something, especially because you cannot get what you want He'll be gnashing his teeth when he hears that we lost the contract. The news caused great wailing and gnashing of teeth.
See the Oxford Advanced Learner's Dictionary entry: gnash