IPA: /ˈɒnəʊmæst/
KK: /ˈɒnəʊmæst/
A person who studies the history and origin of names.
The onomast is researching the etymology of family names.
Onomast is derived from the Greek word "onoma" (meaning name) and the suffix "-ist" (meaning one who practices or is concerned with). The term refers to someone who studies or specializes in names, particularly in the context of naming conventions or onomastics.
Think of 'onoma' which means 'name' — an onomast is someone who is concerned with names.