"Get off someone's back" is a phrasal verb that means to stop pressurizing, criticizing, or harassing someone. There are various synonyms for this phrase, each with its own unique connotation. "Ease up" suggests the need to relax or loosen a tight grip on someone's actions or expectations. "Back off" implies a more forceful demand for someone to step away or withdraw from a situation. "Give someone a break" denotes a need to be more compassionate or understanding towards someone. "Let someone be" conveys the need to allow someone the freedom to make their own choices. These synonyms are useful to convey the essential idea of easing up on someone's expectations or demands.