infantile
1. [ adjective ] indicating a lack of maturity
Synonyms: childish
Examples:

"childish tantrums" "infantile behavior"

Related terms: immature
2. [ adjective ] of or relating to infants or infancy
Examples:

"infantile paralysis"

Related terms: infancy
3. [ adjective ] being or befitting or characteristic of an infant
Synonyms: infant baby
Examples:

"baby rabbits"

Related terms: young
Similar spelling:   infant
  Infante
  infantilism
  infanticide
  Infantino
  invented
  infantry
  infant_death
  inventive
  invent
  inventively
  infantryman
  infancy