| permanence(noun, strength, endurance, persistence, toughness) |
| immortality(noun, age, future, durability, infinity) |
| imperishableness |
| imperishingness |
| perpetuity(noun, age, future, infinity, forever) |
| durability(noun, time, strength, firmness, toughness) |
| eternity(noun, forever) |
| indestructibility(noun, strength, toughness, durability, permanence) |
| infinity(noun, age, future, perpetuity, forever) |
| aeon(noun, age, future, infinity, perpetuity) |
| afterlife(noun, age, future, infinity, perpetuity) |
| age(noun, future, infinity, perpetuity, forever) |
| ages(noun, age, future, infinity, perpetuity) |
| blue moon(noun, expression, age, future, infinity) |
| constancy(noun, strength, endurance, persistence, toughness) |
| deathlessness |
| durableness(noun, strength, firmness, endurance, persistence) |
| endless time(noun, expression, age, future, infinity) |
| endlessness(noun, age, future, infinity, perpetuity) |
| everlasting |