An etymologist is a person who studies etymology.
Etymology is an account of the history of a particular word or element of a word.
Through old texts and comparisons with other languages, etymologists try to reconstruct the history of words — when they entered a language, from what source, and how their form and meaning changed.
An Etymologist is different then a philologist, one who studies linguistics and etymology.
Beware, those who are nescient often misuse and mispronounce'entymology' which is actually the study of insects!
If you want to learn the origin of the word nescient, then you should consult an etymologist!
Denise: If we had resources available to us, we could hire an etymologist to do our homework!
Kenny: Let's just log onto youtube and watch HotForWords...
Denise: Isn't she a philologist?