partaker

From partake + -er.

partaker (plural partakers)

1. One who partakes of something.

   The joint was passed around the circle, but he was not a partaker, so he waved it away.

   • c. 1587–1588 (date written), [Christopher Marlowe], Tamburlaine the Great. […] The First Part […], 2nd edition, part 1, London: […] [R. Robinson for] Richard Iones, […], published 1592, →OCLC; reprinted as Tamburlaine the Great (A Scolar Press Facsimile), Menston, Yorkshire; London: Scolar Press, 1973, →ISBN, Act I, scene ii:

     Won with thy words, & conquered with thy lookes,
     I yeeld my ſelfe, my men & horſe to thee:
     To be partaker of thy good or ill,
     As long as life maintaines Theridimas.

2. A partner or accomplice.

• (one who partakes): imbiber, participant, user

• (antonym(s) of “one who partakes”): abstainer, faster, refuser