Noun

wanton [pl. wantons]
flirt [pl. flirts]
trifler [pl. triflers]
scapegrace [pl. scapegraces]
dallier [pl. dalliers]
abuser [pl. abusers]
fiddler [pl. fiddlers]
ruiner {peoples & races}

Adjektive

frivolous [ more frivolous ; most frivolous]
mischievous [ more mischievous ; most mischievous]
trifling [ more trifling ; most trifling]
frolicsome [ more frolicsome ; most frolicsome]
sporty [ sportier ; sportiest]
prankish {entertainment}