Synonyms for watchful

Adjective

1. argus-eyed, open-eyed, vigilant, wakeful, watchful, alert (vs. unalert)

usage: carefully observant or attentive; on the lookout for possible danger; "a policy of open-eyed awareness"; "the vigilant eye of the town watch"; "there was a watchful dignity in the room"; "a watchful parent with a toddler in tow"

2. insomniac, sleepless, watchful, awake(predicate) (vs. asleep)

usage: experiencing or accompanied by sleeplessness; "insomniac old people"; "insomniac nights"; "lay sleepless all night"; "twenty watchful, weary, tedious nights"- Shakespeare