ineffectiveness

noun 0.836

inefficiency

noun 0.756

efficacy

noun 0.723

inefficient

noun 0.689

ineptitude

noun 0.684

efficacity

noun 0.670

ineptness

noun 0.662

incompetence

noun 0.652

futility

noun 0.651

noneffective

noun 0.649

impotency

noun 0.646

effeteness

noun 0.643

efficaciousness

noun 0.642

inutility

noun 0.631

incompetency

noun 0.626

uselessness

noun 0.620

inadequacy

noun 0.615

impotence

noun 0.612

insufficiency

noun 0.612

inability

noun 0.600

fruitlessness

noun 0.597

impuissance

noun 0.586

invalidity

noun 0.581

incapability

noun 0.580

inapplicability

noun 0.576

effectuality

noun 0.575

infeasibility

noun 0.571

unproductiveness

noun 0.568

incompetent

noun 0.566

nonfunctionality

noun 0.565

bioefficacy

noun 0.565

unenforceability

noun 0.564

unfruitfulness

noun 0.562

worthlessness

noun 0.562

impotent

noun 0.560

infertility

noun 0.559

fecklessness

noun 0.558

dysfunctionality

noun 0.557

inaction

noun 0.556

powerlessness

noun 0.553

effectiveness

noun 0.550

unfeasibility

noun 0.548

impracticality

noun 0.548

efficiency

noun 0.543

incapacity

noun 0.541

inadequate

noun 0.538

unprofitability

noun 0.537

effectivity

noun 0.537

unworthiness

noun 0.534

feebleness

noun 0.531

inactivity

noun 0.529

infelicity

noun 0.527

inexistence

noun 0.525

inexpediency

noun 0.525

infirmity

noun 0.522

inauspiciousness

noun 0.521

dysfunction

noun 0.521

insignificance

noun 0.520

purposelessness

noun 0.520

inaccuracy

noun 0.519

unfitness

noun 0.518

pointlessness

noun 0.517

inequivalence

noun 0.515

nonviability

noun 0.515

ineligibility

noun 0.515

inconsequentiality

noun 0.512

inertness

noun 0.512

irrelevancy

noun 0.511

helplessness

noun 0.510

inelasticity

noun 0.508

inconsequence

noun 0.508

incapable

noun 0.504

defectiveness

noun 0.503

inanity

noun 0.503

incompatibility

noun 0.503

inexorability

noun 0.503

wastefulness

noun 0.502

faultiness

noun 0.502

insubstantiality

noun 0.500