permanence Synonyms

permanency overstability solidity soundness stability stableness steadfastness steadiness steel sempiternity self-consistency robustness rigidity retentivity resoluteness remanence reliability persistency stoutness strength substantiality invariableness dependability continuousness ceaselessness machismo enduringness lastingness perennation big game unalterability rigour changelessness unchangeableness uniformity tenacity survivance survival persistence perpetuity perpetuation fixity fixedness firmness fastness existence everlastingness endurance endlessness durableness