English version

past master

From Longman Dictionary of Contemporary Englishpast masterˌpast ˈmaster noun [countable] 🔊 🔊 someone who is very skilled at doing something and has done it many times before syn expertpast master at (doing) something 🔊 She’s a past master at exploiting other people.
Examples from the Corpus
past masterGuy had proved himself a past master at the art.Johnny Morris is a past master at both.He's a past master at keeping his whereabouts secret, laying false trails.That sort of thing wasn't her style at all, but Susan was a past master at it.Such a fellow is Colin Fletcher, long-distance trekker, amateur naturalist and past master of great escapes.What they will see is light in the form of an installation by that past master of lux deluxe, Dan Flavin.past master at (doing) somethingGuy had proved himself a past master at the art.Johnny Morris is a past master at both.He's a past master at keeping his whereabouts secret, laying false trails.That sort of thing wasn't her style at all, but Susan was a past master at it.
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