- 1master something to learn or understand something completely to master new skills/techniques French was a language he had never mastered. control
- 2master something to manage to control an emotion She struggled hard to master her temper.
- 3master something/somebody to gain control of an animal or a person
learn/understandverbjump to other results
NAmE//ˈmæstər//Verb Forms present simple I / you / we / they master
he / she / it masters
past simple mastered
-ing form mastering