RichThesaurus
insomnious
insomnious
synonyms
on the alert
on the qui vive
wary
heedful
watchful
wide-awake
astir
wakeful
on guard
insomniac
careful
attentive
alive
unsleeping
on the lookout
vigilant
observant
sleepless
waking
unsleepful
fretful
awakening
woke
restless
awake
awakened
insomnolent
wakesome
conscious
wide awake
sharp
knowing
alert
open-eyed
cautious
aware
all ears
chary
guarded
heads-up
rousing
sharp-eyed
insomnious
antonyms
sleepy
unaware