Where does “uksus” come from?

uksus (Ingrian) comes from Russian уксус, from Old East Slavic уксусъ, from Ancient Greek ὄξος, from Ancient Greek ὀξύς, from Proto-Indo-European h₂eḱ- — sharp.

uksus (Ingrian): vinegar

Definitions

vinegar

Ancestry of “uksus”, step by step

Step	Language	Word	Meaning
1	Russian	уксус	vinegar
2	Old East Slavic	уксусъ	—
3	Ancient Greek	ὄξος	poor wine; vinegar made therefrom; sour fellow,...
4	Ancient Greek	ὀξύς	sharp, pointed; sharp, keen; quick, hasty, swift
5	Proto-Indo-European	h₂eḱ-	sharp

Every word from Proto-Indo-European h₂eḱ- →Every word from Ancient Greek ὀξύς →Every word from Ancient Greek ὄξος →