wakeful

英 ['weɪkfʊl; -f(ə)l] 美['wekfl]

• adj. 醒着的；失眠的；警觉的

1. 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. (of sleep) easily disturbed;

"in a light doze"

"a light sleeper"

"a restless wakeful night"