smart

capable of independent and apparently intelligent action

smart weapons

improperly forward or bold

don't be fresh with me

impertinent of a child to lecture a grownup

showing mental alertness and calculation and resourcefulness

elegant and stylish

chic elegance

a smart new dress

quick and brisk

I gave him a smart salute

we walked at a smart pace

characterized by quickness and ease in learning

some children are brighter in one subject than another

smart children talk earlier than the average

painfully severe

he gave the dog a smart blow

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

be the source of pain