vinegary

adjective3

1. •
   Sour; like vinegar.

   • When Martha reopened the bottle of wine from the previous week's party, a vinegary whiff indicated that drinking it was out of the question.
   • Cherry Jones as Nan Pierce (2023), 42:42 from the start, in Succession, season 4, episode 1: “I like my wine thin and vinegary.”
2. •
   Of a liquid, having turned partially or fully to vinegar.
3. •
   (figurative) Acerbic, bitter, irritable.

   • Edward's maiden aunt was a vinegary old soul with a sharp tongue and quick temper; she would not be receiving a wedding invitation.