all ears

active bright careful intelligent observant perceptive sharp vigilant wary watchful wired wise

hip jazzed quick ready spirited

cagey circumspect clever fast on the draw good hands heads up heedful on guard on one's toes on the ball on the job on the lookout on the qui vive psyched-up switched on wide-awake with it

careless dull foolish ignorant inattentive incautious indifferent indiscreet lazy negligent stupid thoughtless unaware unintelligent unobservant

slow uneducated

asleep drowsy lethargic sluggish weary

aware conscientious interested observant vigilant watchful

heedful

alert awake enrapt enthralled fascinated glued hanging on every word hooked immersed intent listening mindful on one's toes on the ball on the job on the lookout on the qui vive preoccupied regardful studious

careless inattentive negligent unaware

disregarding heedless ignorant inconsiderate neglectful neglecting unattentive

circumspect discreet judicious leery prudent tentative vigilant wary watchful

alert safe

cagey calculating chary considerate forethoughtful gingerly hedging one's bets heedful keeping on one's toes on the lookout playing it cool playing safe politic provident pussyfoot shrewd taking it easy taking it slow thinking twice walking on eggs watching one's step watching out with one's eyes peeled

careless certain foolish inattentive incautious indiscreet negligent rash reckless sure thoughtless uncareful unwise

hasty heedless imprudent unguarded unobservant

active attentive bright cagey careful clever good hands heads up intelligent lively observant on guard on one's toes on the job on the lookout on the stick perceptive quick ready sharp spirited vigilant watchful wise with it

active bright cagey careful circumspect clever fast on the draw good hands heads up heedful hip intelligent jazzed observant on guard on one's toes on the ball on the job on the lookout on the qui vive perceptive psyched-up quick ready sharp spirited switched on vigilant wakeful wary watchful wide-awake wired wise with it

attentive careful cautious observant suspicious vigilant wary

alert

chary circumspect glued guarded heedful hooked keen not missing a trick on guard on one's toes on the ball on the job on the qui vive on the watch open-eyed prepared ready see after see to unsleeping wakeful wide-awake with eyes peeled

careless heedless inattentive incautious indiscreet rash thoughtless uncareful unobservant

negligent

active alert attentive bright bright-eyed and bushy-tailed fast on the draw heads up intelligent lively on guard on one's toes on the ball on the job on the lookout psyched-up quick ready sharp spirited vigilant watchful wide-eyed wired