immature
young
adolescent
airy
attenuate
attenuated
beardless
boylike
calflike
childish
childlike
coltish
delicate
diaphanous
diluted
ethereal
fine
fine-drawn
finespun
flimsy
frail
gauzy
girlish
girllike
gossamer
gracile
insubstantial
juvenile
kiddish
lacy
light
maiden
maidenly
misty
papery
puerile
puplike
puppyish
puppylike
rare
rarefied
slender
slenderish
slight
slight-made
slim
slimmish
slinky
small
eager
feminine
frank
joyous
passionate
playful
wistful
youthful