The phrase "giving a black eye" refers to physically harming someone by hitting them in the eye, resulting in a bruise that appears black or dark. Antonyms for this phrase could be related to actions that promote healing, such as "healing a black eye" or "treating a bruised eye." Alternatively, antonyms could focus on positive actions that build up or uplift someone, such as "lifting someone up" or "giving someone a confidence boost." These antonyms emphasize the importance of non-violent, supportive behaviors in building and maintaining healthy relationships with others.