IPA: //ˈænɪkˌdoʊtɪst//
KK: /ænɪkˈdoʊtɪst/
A person who shares or collects short, interesting stories about real events or people.
The anecdotist entertained the audience with funny stories from his travels.
Anecdotist is formed from "anecdote" (from Greek "anekdota", meaning things unpublished or unreported) and the suffix "-ist" (meaning one who practices or is concerned with). An anecdote is a short, interesting story, and an anecdotist is someone who tells or specializes in such stories.
Think of an anecdote as an interesting story that is 'unpublished' ('anekdota'), and an anecdotist is someone who shares these stories.