perpetual
1. [ adjective ] continuing forever or indefinitely
Synonyms: eternal unending everlasting unceasing ageless
Examples:

"the ageless themes of love and revenge" "eternal truths" "life everlasting" "hell's perpetual fires" "the unending bliss of heaven"

Related terms: permanent
2. [ adjective ] uninterrupted in time and indefinitely long continuing
Synonyms: ceaseless never-ending incessant unceasing unremitting constant
Examples:

"the ceaseless thunder of surf" "in constant pain" "the incessant noise of the city" "the never-ending search for happiness" "the perpetual struggle to maintain standards in a democracy"

Related terms: continuous
3. [ adjective ] occurring so frequently as to seem ceaseless or uninterrupted
Synonyms: incessant endless
Examples:

"a child's incessant questions" "your perpetual (or continual) complaints"

Related terms: continual
Similar spelling:   perpetually
  perpetuate
  perpetuation
  perpetuity
  peripetia
  perpetrate
  perpetrator
  peripeteia