cheerful
gay
merry
blithe
boisterous
boyish
buoyant
carefree
chatty
convivial
debonair
easygoing
elated
exuberant
flippant
genial
gleeful
good-humored
good-natured
hilarious
jocular
jovial
joyous
mirthful
playful
pleasure-loving
rollicking
sportive
sprightly
talkative
thoughtless
upbeat
uproarious
vivacious