A transitional period of development between an initial or early phase and an established or mature phase:
An early stage of existence:
An instance of this
A state of arrested development in an adult, characterized by retention of infantile mentality, accompanied by stunted growth and sexual immaturity, and often by dwarfism.
(Uncountable) The quality or state of being young.
The definition of maturity is adulthood, or is the state of being fully developed, or the time when a note is due and payable.
Find another word for immaturity. In this page you can discover 19 synonyms, antonyms, idiomatic expressions, and related words for immaturity, like: youthfulness, adolescence, infancy, childishness, puerility, ignorance, callowness, babyishness, rawness, greenness and imperfection.