English version

be a past master (at something)

From Longman Dictionary of Contemporary Englishbe a past master (at something)be a past master (at something)British EnglishGOOD AT to be very good at doing something because you have done it a lot He’s a past master at getting free drinks out of people. master
Examples from the Corpus
be a past master (at something)Johnny Morris is a past master at both.That sort of thing wasn't her style at all, but Susan was a past master at it.
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