| age(noun, time, informal, period, future) |
| eternity(noun, time, forever) |
| long(noun, time) |
| aeon(time, period, age, future, infinity) |
| forever and a day(noun, expression, idiom, time, age) |
| afterlife(age, future, infinity, perpetuity, forever) |
| ages(noun, time, age, future, infinity) |
| endless time(expression, age, future, infinity, perpetuity) |
| endlessness(age, future, infinity, perpetuity, forever) |
| eon(noun, time) |
| everlastingness(age, future, infinity, perpetuity, forever) |
| forever and ever(noun, idiom, time) |
| future(age, infinity, perpetuity, forever) |
| immortality(age, future, infinity, perpetuity, forever) |
| imperishability(age, future, infinity, perpetuity, forever) |
| infiniteness(age, future, infinity, perpetuity, forever) |
| infinitude(age, future, infinity, perpetuity, forever) |
| infinity(age, future, perpetuity, forever) |
| infrequent |
| kingdom come(expression, age, future, infinity, perpetuity) |