The antonyms for the phrase "stopped participating" are "engaged," "involved," "contributed," "partook," "collaborated," "participated," and "joined." By contrast, choosing not to participate can be described by such antonyms as "stood back," "observed," "watched from afar," "renounced," "disengaged," "withdrew," or "refrained." Regardless of the precise antonym used, the act of participation entails active involvement in a particular activity, program, or event. Those who regularly participate tend to have a deeper sense of meaning, community, and belonging in their lives. It is often essential to make a deliberate effort to participate when invited or when the opportunity arises to avoid isolation and build new relationships.