Vinegar is a liquid that's commonly used in cooking for its tart, acidic flavor. You're probably familiar with the taste of vinegar from things like salad dressing and pickles.

While you might not want to drink a glass of vinegar, it's a useful ingredient in many recipes, both for its flavor, which varies depending on how it's made, and its tenderizing properties. Vinegar can also be used for cleaning, freshening laundry, killing pests, and taking the sting off a bite from a jellyfish or wasp, among many other uses. Vinegar means "sour wine," and that's exactly what it is— juice that's fermented way beyond wine.

Definitions of vinegar
  1. noun
    sour-tasting liquid produced usually by oxidation of the alcohol in wine or cider and used as a condiment or food preservative
    synonyms: acetum
    see moresee less
    chili vinegar
    fiery vinegar flavored with chili peppers
    cider vinegar
    vinegar made from cider
    wine vinegar
    vinegar made from wine
    type of:
    a preparation (a sauce or relish or spice) to enhance flavor or enjoyment
  2. noun
    dilute acetic acid
    see moresee less
    type of:
    acetic acid, ethanoic acid
    a colorless pungent liquid widely used in manufacturing plastics and pharmaceuticals
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