Antonyms for the phrase "gives hell" could include words such as "praises," "compliments," "supports," "encourages," or "applauds." Giving someone hell implies a negative or critical approach, whereas using positive antonyms can instead express encouragement, admiration, and support. For example, instead of giving someone hell for a mistake, one could compliment them for their effort or encourage them to try again. In communication, choosing the right antonym can make a significant difference in how a message is received and interpreted, as it can shift the tone from negative to positive.