| lengthiness(noun, life, age, duration) |
| longness(noun, life, age, duration) |
| many years(noun, expression, period, continuance, duration) |
| millennial(noun, life, age, date, continuance) |
| obsolescence(noun, life, age, duration) |
| older(noun, life, age, duration) |
| perdurability(noun, life, age, duration) |
| period(noun, life, age, duration, life course) |
| permanence(noun, life, age, life course) |
| perpetuation(noun, life, age, life course) |
| postseason(noun, life, date, continuance, duration) |
| protraction(noun, life, age, life course) |
| ripe(noun, life, age, duration) |
| run(noun, life, age, duration, life course) |
| sedentism(noun, date, continuance, duration, lifetime) |
| stale(noun, life, age, duration) |
| staled(noun, life, age, duration) |
| staler(noun, course, life, existence) |
| stales(noun, course, life, existence) |
| staling(noun, course, life, existence) |