RichThesaurus
on the lookout
on the lookout
synonyms
vigilant
watchful
on the qui vive
alert
observant
attentive
heedful
wary
on guard
circumspect
on the ball
on the alert
sharp
careful
chary
all ears
on one's guard
aware
cautious
cagey
prudent
regardful
beady-eyed
leery
on one's toes
eagle-eyed
perceptive
ready
on the job
wakeful
sharp-eyed
not missing a trick
awake
hawk-eyed
keen-eyed
gingerly
wide-awake
on one’s toes
with one's eyes open
discreet
gimlet-eyed
canny
wide awake
mindful
Argus-eyed
with eyes like a hawk
with one's eyes skinned
spirited
with one's eyes peeled
quick
more synonyms
on the lookout
antonyms
inattentive
careless
heedless
unobservant
incautious
indiscreet
unguarded
unwary
unaware
rash
recklessly
negligent
unsuspicious
unwitting
thoughtless
reckless
unwatchful
unalert
tactless
weary
sleepy
uncareful
unprepared
sluggish
unwise
injudicious
ignorant
disregarding
impolitic
neglectful
imprudent
carelessly
inattentive
neglecting
inconsiderate
oblivious
lethargic
drowsy
dreamy
hasty
asleep
foolish
complacent
impulsive