perpetual
adjective
1. continuing forever or indefinitely
- hell's perpetual fires
Similar word(s): lasting, permanent, aeonian, ageless, eonian, eternal, everlasting, unceasing, unending
2. uninterrupted in time and indefinitely long continuing
- the perpetual struggle to maintain standards in a democracy
Similar word(s): continuous, uninterrupted, ceaseless, constant, incessant, unceasing, unremitting