permanence (n.)
- age
- antiquity
- application
- assiduity
- assiduousness
- ceaselessness
- changelessness
- concentration
- constancy
- continuance
- dependability
- diligence
- doggedness
- durability
- duration
- endlessness
- endurance
- engrossment
- eternity
- everlastingness
- everness
- fidelity
- fixedness
- immutability
- incessancy
- incommutability
- indefatigability
- indestructibility
- industriousness
- industry
- inertness
- infinity
- insistence
- insistency
- irreversibility
- lastingness
- longevity
- loyalty
- maintenance
- obstinacy
- patience
- perdurability
- perennation
- permanency
- perpetuity
- perseverance
- persistence
- persistency
- pertinacity
- plodding
- preoccupation
- relentlessness
- reliability
- resolution
- sedulity
- sedulousness
- sempiternity
- single-mindedness
- stability
- stamina
- standing
- steadfastness
- steadiness
- stubbornness
- survival
- tenaciousness
- tenacity
- timelessness
- tirelessness
- unalterability
- unchangeability
- unchangeableness