When someone "gets into the act," they are becoming actively involved in a situation or taking part in something. There are several synonyms that can be used to express this idea, such as "joining in," "participating," "getting involved," "taking part," "contributing," "pitching in," or "playing a role." These words all suggest that a person is taking action and becoming a part of the activity or situation at hand. They convey a sense of proactivity and an eagerness to be a part of something, whether it's a group project, a social event, or a team sport. By using these synonyms, we can enrich our language and convey our meaning more accurately and effectively.