Vinegar
Etymology

The word "vinegar" arrived in Middle English from Old French (vyn egre; sour wine), which in turn derives from Latin: vīnum (wine) + ācre (neuter gender of ācer, sour). Vinegar was formerly also called eisel.

The word "acetic" derives from Latin acētum (vinegar, or more properly vinum acetum: "wine turned sour").
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