playful
antic
arch
devilish
elfish
elvish
foolish
full of mischief
high-spirited
impish
knavish
larkish
merry
mischief-loving
mischievous
prankish
pranksome
pranky
roguish
scampish
scapegrace
sportive
trickish
tricksy
waggish
wicked
cambrianhousesociable
caninoid
ear-to-ear
eye-burning
funnest
gap-toothed
go-to-hell
mirror-polished
musically-gifted
rose-tinted
self-deprecatory
sunniest
viperish
white-toothed
winningest