wakeful

Adj.	1.	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" open-eyed, vigilant, watchful, argus-eyed alert - very attentive or observant; "an alert and responsive baby is a joy"; "caught by a couple of alert cops"; "alert enough to spot the opportunity when it came"; "constantly alert and vigilant, like a sentinel on duty"
	2.	wakeful - (of sleep) easily disturbed; "in a light doze"; "a light sleeper"; "a restless wakeful night" light shallow - not deep or strong; not affecting one deeply; "shallow breathing"; "a night of shallow fretful sleep"; "in a shallow trance"

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