Antonyms for wide-awake:
distracted, dozing, asleep, drowsy, oblivious, heedless, dormant, preoccupied, sleeping, dozy, slumberous, slumbering, napping, absorbed, unalert, absent, somnolent, inattentive, abstracted, absentminded, sleepy.
Synonyms for wide-awake:
Other synonyms and related words:
observant, sleepless, cautious, tenty, lively, diligent, argus-eyed, quick, attentive, active, open-eyed, on the alert, agile, nimble, ready, wakeful, prepared, conscious, vigilant, prompt, wary, watchful.
fully awake (adjective)
Sense 2 (noun)
Sense 3 (noun)
Sense 4 (noun)