eternal synonyms

permanent forever infinite perpetual indefinite immortal timeless limitless everlasting unyielding indestructible boundless indomitable undying immeasurable ageless imperishable deathless unconquerable illimitable never-ending dateless indeterminable unfading eonian sempiternal

always constant continuous endless persistent continual enduring relentless unbroken uninterrupted interminable incessant ceaseless unremitting unending unceasing continued