perpetuation Synonyms

protraction continuance prolongation preservation lengthening protracting propagation preserving keeping persistence perpetuity perpetuate ages and ages retention sequel upholding everlasting life eternalness eternality ceaselessness deathlessness lastingness timelessness sustaining stability perpetuating permanency eternity endurance endlessness duration durability continuity continuing continuation constancy everlastingness existence extension permanence perennity maintenance maintaining lengthiness increase imperishability immortalization immortality conservation