| enduring(noun, verb, adjective, increase, strength) |
| lasting(verb, adjective, continue, certain, fixed) |
| persistent(adjective, strong, continue, firm, certain) |
| persisting(verb, adjective, increase, line, active) |
| abiding(verb, adjective, continue, certain, fixed) |
| chronic(adjective, continue, fixed, persistent, current) |
| continuous(adjective, slow, certain, steady, regular) |
| constant(adjective, strong, firm, certain, determined) |
| permanent(adjective, time, continue, fixed, established) |
| perpetual(adjective, wild, familiar, stable, fixed) |
| continual(adjective, certain, stable, persistent, constant) |
| durable(adjective, time, continue, established, lasting) |
| perennial(adjective, continue, familiar, regular, continuous) |
| persevering(verb, adjective, strong, firm, determined) |
| unending(adjective, current, continuous, endless, unrelenting) |
| ceaseless(adjective, certain, persistent, constant, reliable) |
| continued(adjective, strong, firm, determined, steady) |
| endless(adjective, certain, reliable, continuous, trustworthy) |
| ongoing(adjective, slow, active, steady, regular) |
| standing(noun, adjective, strength, ability, resolution) |