mas ‧ ter ‧ ful /ˈmɑːstəf ə l $ ˈmæstər-/ BrE AmE adjective
1 . controlling people or situations in a skilful and confident way:
Klein handled the situation in a masterful way.
2 . done with great skill and understanding SYN masterly :
a masterful analysis of the text
—masterfully adverb :
Jack strode masterfully into the room.