Synonyms|77Antonyms|7|Broader|0Narrower|0Related|78
9
endless(adjective, continuous, unlimited, everlasting, uninterrupted)
8
eternal(adjective, limited)
8
everlasting(adjective, eternal)
8
perpetual(adjective, lasting, continual, eternal)
7
dateless(adjective, eternal)
7
infinite(adjective, end, limited, limitless, eternal)
7
timeless(adjective, eternal)
6
constant(adjective, eternal)
6
immortal(adjective, eternal, imperishable)
6
perennial(adjective, eternal)
6
permanent(adjective, eternal)
6
unending(adjective, eternal)
5
ceaseless(adjective, eternal)
5
incessant(adjective, eternal)
5
never-ending(adjective, eternal)
5
unceasing(adjective, eternal)
4
continual(adjective, eternal)
4
continuous(adjective, eternal)
4
indestructible(adjective, eternal)
4
interminable(adjective, eternal)
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APASmart Define. (2015). sempiternal thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/sempiternal/thesaurus/synonyms
ChicagoSmart Define. 2015. "sempiternal thesaurus" https://smartdefine.org/sempiternal/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, sempiternal thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/sempiternal/thesaurus/synonyms>.
MLASmart Define. "sempiternal thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/sempiternal/thesaurus/synonyms>