Although smart is most often used to describe someone who is intelligent, you can also call someone a smart, chic dresser or a smart, sassy wisecracker.

Smart often implies something good, but not always. If someone cautions you, "Don't be smart with me!" — they are demanding that you stop acting so bold and rude. As a verb, if something smarts, then it hurts. If your knee smarts, then you probably whacked it. However, if someone says that you are a smart dresser or a smart thinker, you can take those comments as compliments.

Definitions of smart
  1. adjective
    characterized by quickness and ease in learning
    smart children talk earlier than the average”
    synonyms: bright
    having the capacity for thought and reason especially to a high degree
  2. adjective
    capable of independent and apparently intelligent action
    smart weapons”
    operating with minimal human intervention; independent of external control
  3. adjective
    quick and brisk
    “I gave him a smart salute”
    “we walked at a smart pace”
    acting or moving or capable of acting or moving quickly
  4. adjective
    showing mental alertness and calculation and resourcefulness
    astute, savvy, sharp, shrewd
    marked by practical hardheaded intelligence
    cagey, cagy, canny, clever
    showing self-interest and shrewdness in dealing with others
    street smart, streetwise, with-it
    having the shrewd resourcefulness needed to survive in an urban environment
    having the capacity for thought and reason especially to a high degree
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    lacking or marked by lack of intellectual acuity
    anserine, dopey, dopy, foolish, gooselike, goosey, goosy, jerky
    having or revealing stupidity
    blockheaded, boneheaded, duncical, duncish, fatheaded, loggerheaded, thick, thick-skulled, thickheaded, wooden-headed
    (used informally) stupid
    cloddish, doltish
    heavy and dull and stupid
    dense, dim, dull, dumb, obtuse, slow
    slow to learn or understand; lacking intellectual acuity
    gaumless, gormless
    (British informal) lacking intelligence and vitality
    lumpen, lumpish, unthinking
    mentally sluggish
    nitwitted, senseless, soft-witted, witless
    (of especially persons) lacking sense or understanding or judgment
    deficient in intelligence or mental power
    stupid and ignorant like proverbial rural inhabitants
    stupid, unintelligent
    lacking intelligence
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  5. adjective
    elegant and stylish
    “a smart new dress”
    synonyms: chic, voguish
    fashionable, stylish
    having elegance or taste or refinement in manners or dress
  6. adjective
    painfully severe
    possessing or displaying a distinctive feature to a heightened degree
  7. verb
    be the source of pain
    synonyms: ache, hurt
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    show 12 types...
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    bite, burn, sear, sting
    cause a sharp or stinging pain or discomfort
    feel hot or painful
    have or perceive an itch
    feel the need to eat
    feel the need to drink
    act up
    make itself felt as a recurring pain
    pulsate or pound with abnormal force
    cause a sharp and sudden pain in
    tickle, titillate, vellicate
    touch (a body part) lightly so as to excite the surface nerves and cause uneasiness, laughter, or spasmodic movements
    nettle, urticate
    sting with or as with nettles and cause a stinging pain or sensation
    twitch or throb with pain
    prickle, tingle
    cause a stinging or tingling sensation
    type of:
    cause to be perceived
    have perceptible qualities
  8. noun
    a kind of pain such as that caused by a wound or a burn or a sore
    synonyms: smarting, smartness
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    type of:
    hurting, pain
    a symptom of some physical hurt or disorder
  9. adjective
    improperly forward or bold
    synonyms: fresh, impertinent, impudent, overbold, sassy, saucy, wise
    used of temperament or behavior; lacking restraint or modesty
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