immatureness(n = noun.state) immaturity - not having reached maturity;
is a kind of state
has particulars: greenness, callowness, jejuneness, juvenility, prematureness, prematurity, adolescence, childhood, puerility, babyhood, infancy
Derived forms adjective immature4, adjective immature1, adjective immature3, adjective immature2
The state or quality of being immature; immaturity. Boyle. [1913 Webster]