Onomast is a term used to describe the study of names and their origins. There are numerous synonyms for onomast that can be used when discussing this topic. Some of these synonyms include onomastics, anthroponomastics, toponomastics, and etymology. Onomastics refers to the study of proper names, while anthroponomastics is the study of personal names. Toponomastics refers to the study of place names, while etymology is the study of the origins and history of words. Understanding these synonyms can help you better understand the vast field of onomast and the various specialties within it.