able ace adroit apt born for brainy bright brilliant capable clever crack crackerjack cut out for dexterous endowed excellent expert first-class first-rate good keen keen-witted made for master masterful masterly nimble nimble-witted no dumbbell not born yesterday outstanding quick quick-thinking quick-witted scintillating sharp sharp-witted skilled smart steel-trap superb superior talented top-drawer top-flight top-notch virtuoso with a flair