idempotence

noun 0.938

idempotent

noun 0.858

immutability

noun 0.605

impotency

noun 0.558

imperishability

noun 0.552

immutable

noun 0.547

indestructibility

noun 0.539

impregnability

noun 0.538

equipollence

noun 0.537

unchangeability

noun 0.536

invariability

noun 0.536

identicalness

noun 0.535

invariance

noun 0.525

impeccability

noun 0.521

impassibility

noun 0.520

ipseity

noun 0.516

irreversibility

noun 0.508

immateriality

noun 0.507

atemporality

noun 0.507

permanence

noun 0.504

unrepeatability

noun 0.502

inimitability

noun 0.502

reproducibility

noun 0.501