Antonyms of adj wakeful

3 senses of wakeful

Sense 1
argus-eyed, open-eyed, vigilant, wakeful -- (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")

INDIRECT (VIA alert) -> unalert, unwatchful, unvigilant -- (not alert to what is potentially dangerous)

Sense 2
light, wakeful -- ((of sleep) easily disturbed; "in a light doze"; "a light sleeper"; "a restless wakeful night")

INDIRECT (VIA shallow) -> deep -- (relatively deep or strong; affecting one deeply; "a deep breath"; "a deep sigh"; "deep concentration"; "deep emotion"; "a deep trance"; "in a deep sleep")

Sense 3
waking, wakeful -- (marked by full consciousness or alertness; "worked every moment of my waking hours")

INDIRECT (VIA awake) -> asleep -- (in a state of sleep; "were all asleep when the phone rang"; "fell asleep at the wheel")

Similarity of adj wakeful

3 senses of wakeful

Sense 1
argus-eyed, open-eyed, vigilant, wakeful -- (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")
       => alert (vs. unalert), watchful -- (engaged in or accustomed to close observation; "caught by a couple of alert cops"; "alert enough to spot the opportunity when it came"; "constantly alert and vigilant, like a sentinel on duty")

Sense 2
light, wakeful -- ((of sleep) easily disturbed; "in a light doze"; "a light sleeper"; "a restless wakeful night")
       => shallow (vs. deep) -- (not deep or strong; not affecting one deeply; "shallow breathing"; "a night of shallow fretful sleep"; "in a shallow trance")

Sense 3
waking, wakeful -- (marked by full consciousness or alertness; "worked every moment of my waking hours")
       => awake (predicate) (vs. asleep) -- (not in a state of sleep; completely conscious; "lay awake thinking about his new job"; "still not fully awake")