Being a successor refers to someone who follows another in a particular position or role, often in the context of leadership or inheritance. Synonyms for "be successor" include take over, assume, inherit, follow in footsteps, take up the mantle, step into one's shoes, come after, succeed to, and more. Depending on the context or industry, there may be variations or nuances in the meaning, such as in politics, business, or royalty. It's important to choose the right synonym to accurately express the intended meaning, and to avoid confusion or miscommunication when discussing succession planning or transitions.