Where does “συμποσιαστής” come from?

συμποσιαστής (Ancient Greek) comes from Ancient Greek συμπόσιον, from Ancient Greek σῠμπότης, from Ancient Greek σῠμπῑ́νω, from Ancient Greek σῠν-, from Ancient Greek σύν, from Proto-Hellenic *ksún — beside, with.

συμποσιαστής (Ancient Greek): a fellow-drinker; a boon-companion

Definitions

a fellow-drinker; a boon-companion

Ancestry of “συμποσιαστής”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	συμπόσιον	drinking party, entertainment, feast, banquet,...
2	Ancient Greek	σῠμπότης	fellow drinker
3	Ancient Greek	σῠμπῑ́νω	I drink together
4	Ancient Greek	σῠν-	together; with, together
5	Ancient Greek	σύν	beside, with
6	Proto-Hellenic	*ksún	beside, with

Words derived from “συμποσιαστής”

symposiast
symposiastic
symposiastically

Every word from Proto-Hellenic *ksún →Every word from Ancient Greek σῠν- →Every word from Ancient Greek σύν →