agelessness Synonyms

endless life resoluteness persistence perpetuity permanency perennity perdurability invariability indestructibility inalterability imperishability immutability sustainment sustentation sustention continued existence billion years continuousness ceaselessness carrying-on deathlessness athanasia timelessness immutableness carry-over changelessness immortalization immortality conservation conservancy congruity broadening being augmentation augmenting assiduity amplification agreement adhesion conserving consistency consonance fixity everlastingness eternity endurance endlessness durableness continuity continuing