45 entries under perpetual topic. ×

1
diurnal(stable, constant, enduring, lasting, durable)
1
set(stable, constant, hardened, enduring, lasting)
1
yearlong(adjective, enduring)
0
seasonal(adjective, enduring)
0
set in concrete(expression, stable, constant, enduring, lasting)
<123>
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APASmart Define. (2015). perennial thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/perennial/thesaurus/synonyms
ChicagoSmart Define. 2015. "perennial thesaurus" https://smartdefine.org/perennial/thesaurus/synonyms (accessed October 1, 2026).
HarvardSmart Define 2015, perennial thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/perennial/thesaurus/synonyms>.
MLASmart Define. "perennial thesaurus" 10 April 2015. Web. 1 October 2026. <https://smartdefine.org/perennial/thesaurus/synonyms>