The phrase "having being" refers to the existence of something. There are several synonyms for this phrase, such as "existing," "lived," "prevailing," "transpiring," and "occurring." These synonyms can be used interchangeably with "having being" in various contexts. For example, "the event had being" could be rephrased as "the event existed" or "the event occurred." Similarly, "the idea had being in the minds of many" could be replaced with "the idea was prevailing in the minds of many" or "the idea had lived within the minds of many." These synonyms provide alternatives to express the concept of existence and can help to add variation and precision to prose.