"Hath it" is an old-fashioned way of saying "has it" in modern English. Synonyms for this expression can depend on the context, but some alternatives might include "possesses," "holds," "carries," "contains," or "maintains." Each of these synonyms carries a slightly different connotation, and choosing the right one can help you express your meaning more precisely. For example, if you are talking about physical objects, "holds" or "carries" might be most appropriate, while "maintains" could be a better option if you are discussing abstract concepts or ideas. Ultimately, selecting the right synonym for your purpose can help you convey your message more clearly and effectively.