RichThesaurus
unsleeping
unsleeping
synonyms
watchful
wide-awake
wakeful
observant
attentive
sleepless
insomniac
wary
vigilant
wide awake
on guard
on the qui vive
alert
awake
cautious
careful
on the lookout
open-eyed
circumspect
heedful
on the ball
keen
restless
on the alert
ready
on the job
not missing a trick
tossing and turning
chary
without sleep
with eyes peeled
guarded
prepared
insomnious
hawk-eyed
with eyes like a hawk
looking to
on alert
agog
waiting on
keen-eyed
not asleep
waking
on one's toes
with weather eye open
fully awake
with one's eyes open
keeping a weather eye on things
keeping one's eyes skinned
gimlet-eyed
more synonyms
unsleeping
antonyms
inattentive
negligent
asleep
sleepy
impulsive
careless
indiscreet
tired
unaware
sleeping