Definitions of thespian from Vocabulary.com:
(noun) a theatrical performer; an entertainer who performs a dramatic or musical work for an audience
(adj.) of or relating to drama
Synonyms of thespian:
actor
histrion
player
role player
The word thespian is sometimes capitalized because it is taken from a person's name, Thespis, the guy who first took the stage in Ancient Greece.
Tip! Check out 10 Sure-Fire Strategies to Improve Your Vocabulary shared by Litemind.