argus-eyed, open-eyed, vigilant, wakeful -- (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")
light, wakeful -- ((of sleep) easily disturbed; "in a light doze"; "a light sleeper"; "a restless wakeful night")
waking, wakeful -- (marked by full consciousness or alertness; "worked every moment of my waking hours")
(TTS Sound)
