smart

(noun) a kind of pain such as that caused by a wound or a burn or a sore. Synonyms: smarting, smartness.

(verb) be the source of pain. Synonyms: ache, hurt.

(adj) showing mental alertness and calculation and resourcefulness. Synonyms: smart (vs. stupid).

(adj) elegant and stylish. Synonyms: chic, voguish. Examples: "Chic elegance." "A smart new dress." "A suit of voguish cut."

(adj) characterized by quickness and ease in learning. Synonyms: bright. Examples: "Some children are brighter in one subject than another." "Smart children talk earlier than the average."

(adj) improperly forward or bold. Synonyms: fresh, impertinent, impudent, overbold, saucy, sassy, wise. Examples: "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!."

(adj) painfully severe. Examples: "He gave the dog a smart blow."

(adj) quick and brisk. Examples: "I gave him a smart salute." "We walked at a smart pace."

(adj) capable of independent and apparently intelligent action. Examples: "Smart weapons."