[1] : The Collaborative International Dictionary of English v.0.48

wakeful \wake"ful\, a.
   not sleeping; indisposed to sleep; watchful; vigilant.
   1913 webster

         dissembling sleep, but wakeful with the fright.
                                                  --dryden.
   1913 webster -- wake"fully, adv. -- wake"fulness, n.
   1913 webster
see also:
wake"fully wake"fulness 

[2] : WordNet (r) 2.0

wakeful
     adj 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" syn: argus-eyed, open-eyed, vigilant,
             watchful
     2: of sleep easily disturbed; "in a light doze"; "a light
        sleeper"; "a restless wakeful night" syn: light
see also:
argus-eyed open-eyed vigilant watchful light 

[3] : Moby Thesaurus II by Grady Ward, 1.0

28 moby thesaurus words for "wakeful":
   agile, alert, alive, attentive, awake, bright, insomniac,
   insomnious, keen, nimble, on the, on the alert, on the ball,
   on the job, prompt, qui vive, quick, ready, restless, sharp,
   sleepless, slumberless, smart, unblinking, unnodding, unsleeping,
   unwinking, wide-awake

Wakeful >> W Words
Wakeful, definition of term: Wakeful
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