sempiternal
[sem-pi-tur-nl]
/ ˌsɛm pɪˈtɜr nl /
ADJECTIVE
eternal
Synonyms
WEAK
abiding
ageless
always
amaranthine
boundless
ceaseless
constant
continual
continued
continuous
dateless
deathless
enduring
everlasting
forever
illimitable
immemorial
immortal
immutable
imperishable
incessant
indefinite
indestructible
infinite
interminable
lasting
never-ending
perdurable
perennial
permanent
perpetual
persistent
relentless
termless
timeless
unbroken
unceasing
undying
unending
unfading
uninterrupted
unremitting
without end
From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.