immature

noun 0.867

childishness

noun 0.724

maturity

noun 0.708

puerility

noun 0.699

juvenility

noun 0.638

sexual maturity

noun 0.632

inexperience

noun 0.626

infancy

noun 0.608

irresponsibility

noun 0.602

immorality

noun 0.601

childlikeness

noun 0.593

nonadult

noun 0.587

nonage

noun 0.586

youthfulness

noun 0.574

prematurity

noun 0.573

timidity

noun 0.571

maturer

noun 0.570

immodesty

noun 0.569

imperfectness

noun 0.567

adolescence

noun 0.566

unprofessionalism

noun 0.565

stupidity

noun 0.565

youngness

noun 0.564

imprudence

noun 0.563

incompetency

noun 0.560

imbecility

noun 0.559

petulance

noun 0.559

foolishness

noun 0.555

stupidness

noun 0.555

inappropriateness

noun 0.553

incompetence

noun 0.553

infirmity

noun 0.553

imperfection

noun 0.552

subadult

noun 0.549

maladroitness

noun 0.549

timidness

noun 0.548

impishness

noun 0.546

misbehavior

noun 0.546

impetuosity

noun 0.546

childhood

noun 0.546

infantilism

noun 0.545

moodiness

noun 0.543

inferiority

noun 0.543

ignorance

noun 0.542

impropriety

noun 0.542

impatience

noun 0.541

amateurishness

noun 0.540

adulthood

noun 0.540

girlishness

noun 0.539

backwardness

noun 0.538

impulsivity

noun 0.538

agedness

noun 0.538

immateriality

noun 0.538

retardation

noun 0.537

incivility

noun 0.537

inadequacy

noun 0.536

awkwardness

noun 0.536

mushiness

noun 0.536

underage

noun 0.534

emotional age

noun 0.533

maldevelopment

noun 0.532

primitiveness

noun 0.530

delinquency

noun 0.529

awkward age

noun 0.528

silliness

noun 0.527

frivolity

noun 0.527

immobility

noun 0.527

incapability

noun 0.526

nubility

noun 0.526

precociousness

noun 0.524

inability

noun 0.523

idiocy

noun 0.522

inconstancy

noun 0.521

instability

noun 0.521

unfamiliarity

noun 0.520

impulsiveness

noun 0.520

mischievousness

noun 0.520

minor child

noun 0.520

impertinence

noun 0.520

impetuousness

noun 0.519

unseemliness

noun 0.519

ill-formedness

noun 0.519

improvidence

noun 0.518

eeriness

noun 0.518

irritability

noun 0.518

informality

noun 0.517

precocity

noun 0.517

unruliness

noun 0.517

goofiness

noun 0.517

imprecision

noun 0.517

aging

noun 0.517

babyhood

noun 0.516

indiscipline

noun 0.516

irrationality

noun 0.515

incompleteness

noun 0.515

playfulness

noun 0.514

flightiness

noun 0.513

lability

noun 0.513

boyhood

noun 0.513

irresponsible

noun 0.512