There are numerous synonyms available for the word "restrained," which is a term used to describe a sense of control and discipline. Some of the most common synonyms for restrained include "moderate," "held back," "curbed," "restricted," "confined," "controlled," "tempered," and "limited." Each of these synonyms can be used to describe a situation where someone is attempting to keep their emotions, behavior, or actions in check. They might be used to describe someone who is struggling to remain calm in a difficult situation or someone who is attempting to maintain their composure in the face of stress or adversity. Ultimately, restrained is a versatile word with many synonyms that can be used in a variety of situations.