Mutual understanding is a term that pertains to the agreement or common understanding between two or more entities. It could also be referred to as a shared viewpoint or a joint consensus on something. Synonyms for mutual understanding include agreement, accord, harmony, concord, unity, rapport, understanding, cooperation, compatibility, and consensus. These words all imply that two or more parties have reached a shared understanding or decision based on either common beliefs or shared experiences. A mutual understanding, regardless of how it is achieved, is vital to achieving positive outcomes in any situation or partnership.