persistency Synonyms

persistence tenaciousness perseverance doggedness tenacity pertinacity producing perversity perverseness persistent immutability persisting perpetuity resoluteness resolution continuum mulishness relentlessness bullheadedness insistency changelessness stubbornness steadfastness stamina stability perpetuating permanence patience diligence determination contumacy continuity continuing continuation continuance constancy consistency conservancy durability duration endurance obstinacy obduracy inveteracy insistence inflexibility immovability fixedness firmness extension