Holding back can be described with different synonyms based on the context in which it is used. In some cases, it is synonymous with restraint, which could refer to holding back one's emotions or response to avoid reacting impulsively. In other cases, it can be likened to inhibition, which implies that a person is consciously or unconsciously suppressing certain thoughts, actions, or emotions. Additionally, "holding back" can be substituted with the phrase "restraining oneself," which signifies that someone is deliberately limiting their engagement or involvement in a given situation. Other synonyms that can be used in place of "holding back" include reservation, moderation, discretion, and caution.