"Hath got to" is an old-fashioned phrase that means "has to" or "must". There are several synonyms that can be used instead of "hath got to" to convey the same meaning. Some of these synonyms include "needs to", "should", "required to", "obligated to", "compelled to", "bound to", "obliged to", and "must". All of these synonyms indicate a sense of necessity and importance. When communicating with modern audiences, it is preferable to use more commonly used language. Therefore, finding the appropriate synonym for "hath got to" is important in order to effectively convey the intended message.