SPECIALIST
NOUNS – PERSON
1658 — PLAIN MAN a person who is not a specialist or expert in a particular subject
1859 — BEGGAR a specialist, an expert, an authority; a person who is remarkably adept at or keen on a particular pursuit, subject, etc.
1900 — SPESH a specialist → sl.
1904 — MULTISPECIALIST a specialist in many subjects
1918 — ARTIST a specialist, an expert → sl.
1938 — FUNDI a specialist, expert, or enthusiast in a particular subject → colloq., orig. E. Africa
Lexicophilia 