Meaning : Carefully observant or attentive. On the lookout for possible danger.
							Example : 
							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.
							
Synonyms : argus-eyed, open-eyed, vigilant
Meaning : (of sleep) easily disturbed.
							Example : 
							In a light doze.
							A light sleeper.
							A restless wakeful night.
							
Synonyms : light
Meaning : Marked by full consciousness or alertness.
							Example : 
							Worked every moment of my waking hours.
							
Synonyms : waking