The definition of tart is something that has a sharp or sour taste.
Acid is defined as something that has a sour taste, or something that has a pH of less than 7 in chemistry.
Injuring or capable of injuring the feelings; caustic:
Having the sharp, acid taste of lemon juice, vinegar, green fruit, etc.
Find another word for acetic. In this page you can discover 4 synonyms, antonyms, idiomatic expressions, and related words for acetic, like: tart, acid, biting and sour.