1. (adj)argus-eyed, open-eyed, vigilant, wakeful carefully observant or attentive; on the lookout for possibledanger "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. (adj)light, wakeful (of sleep) easily disturbed "in a light doze"; "a light sleeper"; "a restless wakeful night"
3. (adj)waking, wakeful marked by fullconsciousness or alertness "worked every moment of my waking hours"
Definition of 'wakeful'
