past master
noun/ˌpɑːst ˈmɑːstə(r)/
/ˌpæst ˈmæstər/
- a person who is very good at something because they have a lot of experience in it synonym expert
- Director Mel Smith was a past master of this kind of comedy.
- past master at doing something She's a past master at getting what she wants.
- past master at something They are past masters at this game.
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past master