Supervenes is a word that usually refers to something unexpected or sudden taking place, often as a result of something else. Some synonyms for this word include ensue, follow, occur, happen, transpire, come about, come to pass, take place, develop, and arise. Each of these words can be used to describe an event or situation that arises unexpectedly, but they may differ in their connotations or nuances. For example, while "occur" simply means to happen, "ensue" suggests that something follows as a result of a previous action or event, while "develop" implies a gradual unfolding or evolving of a situation.