Noun:
1: smartness, smart, smarting a kind of pain such as that caused by a wound or a burn or a sore
Verb:
1: ache, hurt, smart be the source of pain
Adjective:
1: with-it, canny, cagey, cagy, astute, streetwise, sharp, shrewd, street smart, clever, smart showing mental alertness and calculation and resourcefulness
2: chic, smart, stylish, fashionable, voguish elegant and stylish; "chic elegance"; "a smart new dress"; "a suit of voguish cut"
3: bright, intelligent, smart characterized by quickness and ease in learning; "some children are brighter in one subject than another"; "smart children talk earlier than the average"
4: forward, smart, saucy, sassy, fresh, impertinent, wise, overbold, impudent 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!"
5: intense, smart painfully severe; "he gave the dog a smart blow"
6: smart, fast quick and brisk; "I gave him a smart salute"; "we walked at a smart pace"
7: smart, automatic capable of independent and apparently intelligent action; "smart weapons"