cheerful
light
adaptable
adaptive
afloat
airy
animated
blithe
bouncy
breezy
bright
carefree
convalescent
corky
debonair
ebullient
effervescent
elastic
expansive
extensile
flexible
flexile
floatable
floating
floaty
free and easy
jaunty
light-hearted
lighthearted
lightsome
lively
peppy
perky
recuperative
recuperatory
resilient
responsive
reviviscent
springy
stretch
stretchable
stretchy
supernatant
vivacious
volatile
buoy
buoy up
buoyancy
buoying
boyish
brisk
cheery
confident
exhilarate
exuberant
joyous
optimistic
robust
sanguine
sprightly
sunny
clairvoyant
flamboyant