From Longman Dictionary of Contemporary Englishmasterstrokemas‧ter‧stroke /ˈmɑːstəstrəʊk $ ˈmæstərstroʊk/ noun [countable] SUCCEED IN DOING somethinga very clever, skilful, and often unexpected action that is completely successful That ad campaign was an absolute masterstroke.masterstroke of a masterstroke of diplomacy
Examples from the Corpus
masterstroke• At the time it looked like a masterstroke, a piece of breath-taking audacity.• His action may prove a masterstroke of symbolism.• It proved a masterstroke despite the 20-18 defeat.• Fred Plumb now pulled a masterstroke.• His Ministers are telling him it's a masterstroke.• Undeterred by the understandable timidity of his acquaintances, Goma hit upon a masterstroke of irony.• Politically, it was a masterstroke that rivaled Nixon's visit to China.• The President glowed with pride and a sense of accomplishment after this masterstroke of personal diplomacy. 