active
intelligent
acute
adroit
alacritous
alert
alive
attentive
awake
breakneck
bright
brisk
catty
dashing
deft
dexterous
dextrous
dispatchful
double-quick
eagle-winged
expeditious
express
fast
featly
fleet
flying
galloping
graceful
hair-trigger
hasty
headlong
hustling
keen
light
light of heel
light-footed
limber
lissome
lithe
lively
mercurial
neat-fingered
neat-handed
nimble
nimble-footed
on the
athletic
energetic
flexible
good-looking
hardy
inventive
muscular
resourceful
robust
shrewd
skillful
fragile