Watcher

Noun

 * 1) someone who watches or observes
 * 2) someone who keeps vigil
 * 3) a guard

Adjectives for Watcher
indolent;  wingless;   unsuspected;   lone; sleepless.

Thesaurus
Argus, Charley, TV-viewer, airplane spotter, beholder, bird-watcher, bystander, drugstore cowboy, eyewitness, fire patrolman, fire warden, fireguard, forward observer, gaper, gazer, gazer-on, girl-watcher, goggler, kibitzer, looker, looker-on, lookout, lookout man, night watchman, observer, ogler, onlooker, patrol, patroller, patrolman, perceiver, percipient, picket, roundsman, scout, seer, sentinel, sentry, sidewalk superintendent, spectator, spectatress, spectatrix, spotter, televiewer, television-viewer, vedette, video-gazer, viewer, watch, watchkeeper, watchman, witness

Anagrams

 * rewatch