- 1[transitive, intransitive] clench (something) when you clench your hands, teeth, etc., or when they clench, you press or squeeze them together tightly, usually showing that you are angry, determined, or upset He clenched his fists in anger. Through clenched teeth she told him to leave. His jaw was clenched tight. His fists clenched slowly until his knuckles were white.
- 2[transitive] clench something (in/between something) to hold something tightly and firmly Her pen was clenched between her teeth. She had a gun clenched tightly in her hand.
NAmE//klɛntʃ//Verb Forms present simple I / you / we / they clench
he / she / it clenches
past simple clenched
-ing form clenching