Main entry: smart
Definition: showing mental alertness and calculation and resourcefulness
Antonyms: stupid
Definition: lacking or marked by lack of intellectual acuity
Antonyms: dull
Definition: not having a sharp edge or point
Antonyms: dull
Definition: not keenly felt
Antonyms: natural
Definition: (of a musical note) being neither raised nor lowered by one chromatic semitone
Antonyms: flat
Definition: (of a musical note) lowered in pitch by one chromatic semitone
Main entry: overbold, smart, sassy, saucy, wise, impertinent, impudent, fresh
Definition: improperly forward or bold
Usage: 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!
Antonyms: backward
Definition: directed or facing toward the back or rear
Antonyms: reverse
Definition: of the transmission gear causing backward movement in a motor vehicle
Antonyms: backward
Definition: (used of temperament or behavior) marked by a retiring nature
Antonyms: backward, backwards, back, rearward, rearwards
Definition: at or to or toward the back or rear
Definition: in or to or toward a past time
Main entry: smart
Definition: quick and brisk
Usage: I gave him a smart salute; we walked at a smart pace
Antonyms: slow
Definition: not moving quickly; taking a comparatively long time
Antonyms: slow
Definition: at a slow tempo
Antonyms: slow
Definition: (used of timepieces) indicating a time earlier than the correct time
Main entry: smart
Definition: capable of independent and apparently intelligent action
Usage: smart weapons
Antonyms: manual
Definition: requiring human effort
Main entry: smart
Definition: painfully severe
Usage: he gave the dog a smart blow
Antonyms: mild
Definition: moderate in type or degree or effect or force; far from extreme
Main entry: chic, smart, voguish
Definition: elegant and stylish
Usage: chic elegance; a smart new dress; a suit of voguish cut
Antonyms: unstylish, unfashionable
Definition: not in accord with or not following current fashion
Antonyms: unstylish, styleless
Definition: lacking in style or elegance
Main entry: bright, smart
Definition: characterized by quickness and ease in learning
Usage: some children are brighter in one subject than another; smart children talk earlier than the average
Antonyms: stupid, unintelligent
Definition: lacking intelligence