| Brainy (a.) Having an active or vigorous mind. Thesaurus Entries adroit, alert, apt, bright, brilliant, clever, dexterous, gifted, keen, keen-witted, knowing, nimble, nimble-witted, no dumbbell, not born yesterday, quick, quick-thinking, quick-witted, scintillating, sharp, sharp-witted, smart, steel-trap, talented |