If you are quick, you move with speed. You may be a quick runner or "a quick study" — if you tend to learn things quickly.

The adjective quick can also mean brief and fleeting — as in a quick visit or a quick trip to the store. Quick also means without delay: "You'll need to jot a quick reply to the party invitation." The noun quick is a whole other story; it's a highly sensitive bit of skin, especially the skin under the fingernails or toe nails. Be careful not to chew your nails down to the quick — especially your toe nails.

Definitions of quick
  1. adjective
    moving quickly and lightly
    quick of foot”
    synonyms: agile, nimble, spry
    characterized by energetic activity
  2. adjective
    hurried and brief
    “a quick inspection”
    synonyms: fast, flying
    moving rapidly or performed quickly or in great haste
  3. adjective
    accomplished rapidly and without delay
    “was quick to make friends”
    “his quick reaction prevented an accident”
    synonyms: speedy
    acting or moving or capable of acting or moving quickly
  4. adjective
    performed with little or no delay
    “was quick to respond”
    synonyms: immediate, prompt, straightaway
    acting or moving or capable of acting or moving quickly
  5. adjective
    apprehending and responding with speed and sensitivity
    “a quick mind”
    synonyms: ready
    having the capacity for thought and reason especially to a high degree
  6. adjective
    easily aroused or excited
    “a quick temper”
    synonyms: warm
    easily excited
  7. adverb
    with little or no delay
    “come here, quick!”
    synonyms: promptly, quickly
  8. noun
    any area of the body that is highly sensitive to pain (as the flesh underneath the skin or a fingernail or toenail)
    see moresee less
    type of:
    area, region
    a part of an animal that has a special function or is supplied by a given artery or nerve
Word Family

Test prep from the experts

Boost your test score with programs developed by’s experts.

  • Proven methods: Learn faster, remember longer with our scientific approach.
  • Personalized plan: We customize your experience to maximize your learning.
  • Strategic studying: Focus on the words that are most crucial for success.


  • Number of words: 500+
  • Duration: 8 weeks or less
  • Time: 1 hour / week


  • Number of words: 500+
  • Duration: 10 weeks or less
  • Time: 1 hour / week


  • Number of words: 700+
  • Duration: 10 weeks
  • Time: 1 hour / week