spectator (n.)youdaoicibaDictYouDict[spectator 词源字典]
1580s, from Latin spectator "viewer, watcher," from past participle stem of spectare "to view, watch" (see spectacle). Spectator sport is attested from 1943. Related: Spectatorial. Fem. form spectatress (1630s) is less classically correct than spectatrix (1610s).[spectator etymology, spectator origin, 英语词源]