- 1 quench your thirst to drink so that you no longer feel thirsty synonym slake
- 2quench something (formal) to stop a fire from burning synonym extinguish Firefighters tried to quench the flames raging through the building.
NAmE//kwɛntʃ//Verb Forms present simple I / you / we / they quench
he / she / it quenches
past simple quenched
-ing form quenching