What are the opposite words for sweetener?

The word "sweetener" generally refers to a substance that is added to food or beverages to make it sweeter. However, there are a number of antonyms- words that have the opposite meaning- that could be used to describe such an additive. Some of these antonyms include souring agents like vinegar, lemon juice, or citric acid. Other antonyms might include bitter or savory flavors such as cocoa powder, coffee grounds, or savory spices like chili or curry powder. Ultimately, the choice of antonym will depend on the specific context in which the word "sweetener" is used, and what effect the writer or speaker is trying to achieve.

Antonym of the day

doth to a turn
abstain, avoid, bear.