Quench means to put out, put an end to, or satisfy. If you're stranded in the middle of the desert with nothing to drink, you're probably dreaming of a nice big glass of ice water to quench your thirst.

Quench originally meant “extinguish fires.” That meaning still works today, but we've expanded it to also apply to quenching the fiery thirst of a summer marathon runner or quenching the hot flames of passion. If you want to get deep about the word quench, consider what Voltaire said: “Superstition sets the whole world in flames; philosophy quenches them.”

Definitions of quench
  1. verb
    satisfy (thirst)
    “The cold water quenched his thirst”
    synonyms: allay, assuage, slake
    see moresee less
    type of:
    fill, fulfil, fulfill, meet, satisfy
    fill or meet a want or need
  2. verb
    put out, as of fires, flames, or lights
    quench the flames”
    synonyms: blow out, extinguish, snuff out
    see moresee less
    ignite, light
    cause to start burning; subject to fire or great heat
    extinguish by crushing
    douse, put out
    put out, as of a candle or a light
    black out
    obliterate or extinguish
  3. verb
    reduce the degree of (luminescence or phosphorescence) in (excited molecules or a material) by adding a suitable substance
    see moresee less
    type of:
    bring down, cut, cut back, cut down, reduce, trim, trim back, trim down
    cut down on; make a reduction in
  4. verb
    cool (hot metal) by plunging into cold water or other liquid
    quench steel”
    see moresee less
    type of:
    chill, cool, cool down
    make cool or cooler
  5. verb
    electronics: suppress (sparking) when the current is cut off in an inductive circuit, or suppress (an oscillation or discharge) in a component or device
    see moresee less
    type of:
    bottle up, inhibit, suppress
    control and refrain from showing; of emotions, desires, impulses, or behavior
  6. verb
    suppress or crush completely
    quench a rebellion”
    synonyms: quell, squelch
    see moresee less
    type of:
    conquer, curb, inhibit, stamp down, subdue, suppress
    to put down by force or authority
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