sempiternal
Without any end
Sempiternal means eternal or everlasting—existing through all time without beginning or end.
The word is literary and formal, appearing in philosophical and religious contexts where *eternal* might seem too common: the sempiternal truths of existence, a sempiternal flame.
It carries a slightly archaic, elevated tone that suits solemn or poetic registers.
Lasting without end
- imperishableLasting forever, indestructible
- indestructibleImpossible to damage permanently
- deathlessExempt from mortality
- endlessWithout termination or boundary
unending · ceaseless · never-ending · timeless · ageless · unfading · perennial · amaranthine
Incapable of being changed
- invariableNot subject to change
- unchangeableImpossible to modify
- fixedRestored or immovable
- stableSecure and unchanging
steadfast · unalterable · constant · permanent · unwavering · unvarying · changeless · static
Without any boundaries
- limitlessWithout any boundaries
- unboundedHaving no limits
- inexhaustibleCannot be used up
- measurelessIncapable of being quantified
immeasurable · unfathomable · vast · unlimited · endless · fathomless · bottomless · illimitable
Quality of lasting indefinitely
- perpetuityInfinite continuation of time
- transcendenceSurpassing usual limits
- metaphysicalBeyond the material realm
- divineOf or from gods
celestial · sacred · theological · spiritual · providence · omnipresent · sublime · absolute
undying
Lasting without end
- imperishableLasting forever, indestructible
- indestructibleImpossible to damage permanently
- deathlessExempt from mortality
endless · unending · ceaseless · never-ending · timeless · ageless · unfading · perennial · amaranthine · interminable
immutable
Incapable of being changed
- invariableNot subject to change
- unchangeableImpossible to modify
- fixedRestored or immovable
stable · steadfast · unalterable · constant · permanent · unwavering · unvarying · changeless · static · persistent
boundless
Without any boundaries
- limitlessWithout any boundaries
- unboundedHaving no limits
- inexhaustibleCannot be used up
measureless · immeasurable · unfathomable · vast · unlimited · endless · fathomless · bottomless · illimitable · unconfined
permanence
Quality of lasting indefinitely
- perpetuityInfinite continuation of time
- transcendenceSurpassing usual limits
- metaphysicalBeyond the material realm
divine · celestial · sacred · theological · spiritual · providence · omnipresent · sublime · absolute · platonic
- eternitytimeless, perpetuity, endless, forever after, forevermore
- fountain of youthyouth, youthfulness, rejuvenation, forever young, anti-aging
sempiternalalternating
Occurring in turns
intermittent · sporadic · fluctuating · periodic · cyclical
eternal, immortal, eternity, everlasting, perpetual, eternally, semi-permanent