fast on the draw

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

hip jazzed quick ready spirited

all ears cagey circumspect clever 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

active all ears bright cagey careful circumspect clever 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

active alert all ears attentive bright bright-eyed and bushy-tailed 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