wakeful

adj.

[1]	awake , argus-eyed , open-eyed , sleepless , waking , vigilant , unsleeping , restless , restive , insomniac
[2]	watchful , light , (on the) alert , on the qui vive , sharp , attentive , vigilant , wary , cautious , observant , heedful , on the lookout
[3]	waking