inefficiency

noun 0.878

inefficacy

noun 0.689

ineffectiveness

noun 0.665

incompetent

noun 0.656

efficiency

noun 0.626

efficient cause

noun 0.619

noneffective

noun 0.607

ineptness

noun 0.603

incompetence

noun 0.600

inadequate

noun 0.599

ineptitude

noun 0.588

wastefulness

noun 0.570

incapable

noun 0.570

inexpert

noun 0.566

insufficiency

noun 0.565

incompetency

noun 0.564

impotent

noun 0.558

inutility

noun 0.554

unworkable

noun 0.546

productive efficiency

noun 0.545

defective

noun 0.543

unprofitability

noun 0.543

uselessness

noun 0.541

unproductiveness

noun 0.538

infeasibility

noun 0.538

waster

noun 0.537

inferior

noun 0.532

inert

noun 0.531

inexpediency

noun 0.531

effeteness

noun 0.530

unfortunate

noun 0.530

unprofessional

noun 0.530

insolvent

noun 0.530

irresponsible

noun 0.529

clumsy

noun 0.528

ineligible

noun 0.527

underachiever

noun 0.526

ungainly

noun 0.526

unemployable

noun 0.526

good-for-nothing

noun 0.525

nonfunctionality

noun 0.524

static efficiency

noun 0.523

waste

noun 0.522

malfunctioning

noun 0.521

underperformance

noun 0.520

mismanagement

noun 0.517

wastage

noun 0.516

time-waster

noun 0.514

incompatible

noun 0.514

unworthy

noun 0.513

impaired

noun 0.513

ignorant

noun 0.512

inaccessible

noun 0.511

maladroit

noun 0.510

unfitness

noun 0.509

inconsequential

noun 0.509

inelegance

noun 0.508

unthrift

noun 0.507

laziness

noun 0.505

inadequacy

noun 0.505

intolerant

noun 0.505

inconvenience

noun 0.505

disincentive

noun 0.504

inability

noun 0.503

waste of space

noun 0.502

lazy

noun 0.502

wasting

noun 0.502

undesirable

noun 0.500