infantile (adj.)
- abecedarian
- aboriginal
- antenatal
- autochthonous
- babyish
- beginning
- budding
- childish
- childlike
- creative
- elemental
- elementary
- embryonic
- fetal
- formative
- fundamental
- immature
- inaugural
- inceptive
- inchoate
- inchoative
- incipient
- initial
- initiative
- initiatory
- introductory
- inventive
- juvenile
- kittenish
- nascent
- natal
- neonatal
- newborn
- original
- parturient
- postnatal
- pregnant
- prenatal
- primal
- primary
- prime
- primeval
- primitive
- procreative
- puerile
- rudimentary
- ur
