遊び心のある
adolescence
adolescent
adorable
bairn
boy
cheerful
cheery
child
childhood
children
fortunate
gamesome
glad
gladness
happiness
happy
hat
hilarious
jolly
jovial
joy
joyful
joyfulness
joyous
juvenescence
juvenile
juvenility
kid
lad
lucky
merry
napper
nature
nonage
optimism
optimist
panama
pastime
pleasure
portrait
pretty
rejoicing
smiling
summer
sunny
teenager
varmint
youngster
youth
youthful