1.Definition: capable of independent and apparently intelligent action
2.Definition: characterized by quickness and ease in learning
"Smart children talk earlier than the average"
4.Definition: improperly forward or bold
Related Adjective(s):fresh, impertinent, impudent, overbold, sassy, saucy, wise
5.Definition: painfully severe
"He gave the dog a smart blow"
6.Definition: quick and brisk
"I gave him a smart salute", "We walked at a smart pace"
7.Definition: showing mental alertness and calculation and resourcefulness