Synonyms for Watch (same or very similar meaning)
WordNet sense 1 (a person employed to watch for something to happen):
lookout, picket, scout, sentinel, sentry, spotter, lookout man
WordNet sense 2 (a small portable timepiece):
ticker
WordNet sense 3 (follow with the eyes or the mind):
follow, observe, keep an eye on, watch over
WordNet sense 4 (be vigilant, be on the lookout, be on one's guard, be careful):
look out, watch out
WordNet sense 5 (see or watch):
catch, see, view, take in
WordNet sense 6 (observe with attention):
look on
WordNet sense 7 (the rite of staying awake for devotional purposes (especially on the eve of a religious festival)):
vigil
WordNet sense 8 (find out, learn, or determine with certainty, usually by making an inquiry or other effort):
ascertain, check, determine, learn, find out
From the ODE community, based on WordNet
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