vinegar
Americannoun
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a sour liquid consisting of dilute and impure acetic acid, obtained by acetous fermentation from wine, cider, beer, ale, or the like: used as a condiment, preservative, etc.
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Pharmacology. a solution of a medicinal substance in dilute acetic acid, or vinegar.
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sour or irritable speech, manner, or countenance.
a note of vinegar in his voice.
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Informal. vigor; high spirits; vim.
noun
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a sour-tasting liquid consisting of impure dilute acetic acid, made by oxidation of the ethyl alcohol in beer, wine, or cider. It is used as a condiment or preservative
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sourness or peevishness of temper, countenance, speech, etc
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pharmacol a medicinal solution in dilute acetic acid
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informal vitality
verb
Other Word Forms
- vinegar-like adjective
- vinegarish adjective
- vinegarlike adjective
Etymology
Origin of vinegar
1250–1300; Middle English vinegre < Old French, equivalent to vin wine + egre, aigre sour ( eager )
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Quick pickled cucumbers, dressed with rice vinegar, sugar and sesame oil, bring texture and acidity while a classic Mexican mix of minced onion and cilantro finishes things off.
From The Wall Street Journal • Apr. 6, 2026
Then, while they were still warm, I’d do something crucial: ladle over more golden olive oil, a shake of oregano, red pepper flakes, and a splash of red wine vinegar.
From Salon • Feb. 18, 2026
According to Alpha News, the syringe allegedly used in the attack by the suspect, Anthony Kazmierczak, was filled with apple cider vinegar.
From BBC • Jan. 28, 2026
These molecules naturally cluster into thread-like shapes, somewhat like the separation that occurs when oil and vinegar form layers in salad dressing.
From Science Daily • Dec. 13, 2025
“I just put some things into the pot and added the malt vinegar at the end.”
From "Interpreter of Maladies" by Jhumpa Lahiri
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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.