American Dictionary

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Definition master in American English

master verb

[transitive] verb
/ˈmæstər/
1

to learn something thoroughly so that you know it or can do it very well

Example

Even after studying it for years, she never managed to master the Greek language.

Example

Lewis has mastered the art of giving nothing away in interviews.

Synonyms and related words
2

to manage to control something such as an emotion

Example

It seemed that the senator was unable to master his feelings.

Synonyms and related words
Definition master in American English