
When looking for the French word for chutney last night we discovered the word aigre (sour), and realised that vinegar, or vinaigre in French, must be wine (vin) that is sour (aigre). This is indeed the origin of vinegar and vinaigre.
Vin (wine) comes from the Latin vīnum (wine, grapes, grapevine), from Proto-Italic *wīnom (wine), from Proto-Indo-European *wóyh₁nom (wine).
Aigre (sour, sharp, acid, shrill) comes from the Old French, from Vulgar Latin *acrus / *acrum, from the Classical Latin acer / acrem (sharp, sour, bitter), from Proto-Italic *akris (sharp, sour), from Proto-Indo-European *h₂ḱrós (sharp).
Chutney is a sauce made from fruit and/or vegetables preserved with vinegar and sugar. The word comes from the Hindi चटनी (catnī / chatnee – to lick). In French it is chutney, épice or salade piquante, and is defined as “condiment aigre-doux” (bittersweet condiment), which is where I found the word aigre.

