be a great one for (doing) somethingidiomPart ofgreatbe a great one for (doing) somethingbe a great one for (doing) something — idiomidiom1. To do something very often or to really like doing it.1.idiomDefinitionTo do something very often or to really like doing it.ExampleSara is a great one for telling funny stories.You're a great one for quizzes, aren't you?