IPA: /ˈkɒpɪst/
KK: /ˈkɑpɪst/
A person who makes written copies of documents or texts.
The copyist carefully transcribed the ancient manuscript.
Copyist → It is formed from "copy" (from Latin "copia", meaning abundance or plenty, which evolved to mean a reproduction of text) and "-ist" (meaning a person who practices or is concerned with something). A copyist is a person who makes copies of written material.
Think of someone who is a 'practitioner' ('-ist') of making 'reproductions' ('copy') of texts — that's what a copyist does.