h₂eḱ-es-tó-

“sharp-cut, vinegary”

Widely acceptedtastechemistry

acid, acetic, acetyl

Extended participial of *h₂eḱ- giving Latin acidus/acētum, English acid, acetic, acetyl.‌‍‍‌‌‍‌‍‌‌‌‍‌‌‍‌‌‍‍‍‌‍‍‌‍‍‍‍‌‍‌‍

ǵews-“to taste, try, choose”ǵews-tó-“tasted, chosen by taste”gʰel-n-“gall, bile, bitter”gʷes-“to quench thirst, taste”h₂eḱ-s-“to sharpen (extended with -s)”h₂eḱ-yó-“sharp, bitter, acid”seh₂l-“salt, sea water”sweh₂d-₂“to be sweet, pleasant”