Synonyms:
spectator, witness, viewer, watcher, looker
Meaning: a close observer; someone who looks at something (such as an exhibition of some kind); "the spectators applauded the performance"; "television viewers"; "sky watchers discovered a new star"
Usage examples
The lone watcher swallowed a savage oath.
Such an appetite astonishes me, after I have seen the Crab Spider, that no less ardent watcher, refuse the Bees whom I give her and allow herself to die of inanition.