Bittering is a term that refers to something that makes a substance bitter or taste bitter. The antonyms for bittering include sweetening, improving, enhancing, and enriching. In contrast to bittering, sweetening refers to adding sweetness to a substance, while improving implies making something better or more pleasant. Enhancing is a term that refers to adding to or intensifying the flavor of something, and enriching suggests adding something valuable or beneficial to a substance. These antonyms for bittering can be used to describe the ways in which a flavor can be changed or enhanced to make it more appealing to the senses.