noun
1.
one who takes part in an exhibition simulating happenings in real life
had been an actor on the stage and in television
Synonyms: impersonator, mime, mimic, mummer, performer, playactor, player, thespian, trouper
2.
Synonyms: participant , partaker, participator, party, sharer
Related Word: mainstay, supporter, sustainer, upholder
Contrasted words: abettor, backer, patron, promoter