immature
young
abecedarian
aboriginal
antenatal
autochthonous
babish
baby
babyish
beginning
budding
childish
childlike
creative
doll-like
dollish
elemental
elementary
embryonic
fetal
formative
foundational
fundamental
gestatory
in arms
in diapers
in embryo
in its infancy
in nappies
in swaddling clothes
in the bud
in the cradle
inaugural
inceptive
inchoate
inchoative
incipient
incunabular
infant
infantine
initial
initiative
initiatory
introductory
inventive
juvenile
kittenish
nascent
natal
abnormal
girlish
hysterical
instinctive
inward
irrational
latent
masculine
parental
pathological
perverse
sexual
uncontrollable
unrestrained