smart

a kind of pain such as that caused by a wound or a burn or a sore

be the source of pain

showing mental alertness and calculation and resourcefulness

elegant and stylish; "chic elegance"; "a smart new dress"; "a suit of voguish cut"

characterized by quickness and ease in learning; "some children are brighter in one subject than another"; "smart children talk earlier than the average"

improperly forward or bold; "don't be fresh with me"; "impertinent of a child to lecture a grownup"; "an impudent boy given to insulting strangers"; "Don't get wise with me!"

painfully severe; "he gave the dog a smart blow"

quick and brisk; "I gave him a smart salute"; "we walked at a smart pace"

capable of independent and apparently intelligent action; "smart weapons"