Synonyms of observer

1 Syllable

grad, spy, spies

2 Syllables

watchman, looker, gazer, student, gawkers, viewers, witness, standee, clapper, flagger, watcher, flagman, watchmen, sightseers, viewer, sightseer, gaper, gawker, clappers

3 Syllables

witnesses, stander-by, travellers, signaller, onlooker, beholders, perceivers, attestant, looker-on, testifier, bystanders, onlookers, undergrad, spectators, traveller, registrant, beholder, passer-by, bystander, sportscaster, signalmen, watchkeeper, perceiver, eyewitness, spectator, testifiers, signalman

4 Syllables

commentators, rubbernecker, commentator, eyewitnesses, televiewer

5 Syllables

corroborator, corroborators, intelligencer