(often followed by `to') giving care or attention; "attentive to details"; "the nurse was attentive to her patient"; "an attentive suitor"
5
argus-eyed
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
light
(of sleep) easily disturbed; "in a light doze"; "a light sleeper"; "a restless wakeful night"