ephemerality

noun 0.850

ephemerides

noun 0.727

ephemeris

noun 0.726

transient

noun 0.697

fleetingness

noun 0.654

temporary

noun 0.643

transitoriness

noun 0.636

transience

noun 0.635

temporariness

noun 0.632

momentariness

noun 0.618

eternal

noun 0.610

temporal

noun 0.596

impermanence

noun 0.595

transiency

noun 0.588

perishable

noun 0.583

epoch

noun 0.573

evanescence

noun 0.565

epiphenomenon

noun 0.560

emergent

noun 0.558

everlasting

noun 0.555

imperishable

noun 0.554

occasional

noun 0.538

seasonal

noun 0.536

permeant

noun 0.535

perennial

noun 0.532

flash in the pan

noun 0.529

eternity

noun 0.527

short time

noun 0.523

emerging

noun 0.522

erasable

noun 0.521

interim

noun 0.519

episodicity

noun 0.518

intermittent

noun 0.514

emerger

noun 0.510

permanent

noun 0.509

ethereality

noun 0.507

epi

noun 0.507

earthly

noun 0.507

eternality

noun 0.505

esper

noun 0.503

interminable

noun 0.503

temporality

noun 0.502

mayfly

noun 0.502

nondurable

noun 0.500

expiration

noun 0.500

epic

noun 0.500