7 entries under perpetual topic. ×

15
lasting(adjective, continue, persistent, permanent, continuing)
12
perennial(adjective, continue, familiar, enduring, lasting)
3
constant(adjective, familiar, persistent, continuous, established)
2
ceaseless(adjective, persistent, continuous, lasting, continuing)
1
continual(persistent, continuous, lasting, continuing, recurrent)
1
recurrent(persistent, continuous, lasting, continuing)
1
sustained(persistent, lasting, recurrent, remaining)
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APASmart Define. (2016). long-lived thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/long-lived/thesaurus/synonyms
ChicagoSmart Define. 2016. "long-lived thesaurus" https://smartdefine.org/long-lived/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2016, long-lived thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/long-lived/thesaurus/synonyms>.
MLASmart Define. "long-lived thesaurus" 26 February 2016. Web. 29 September 2026. <https://smartdefine.org/long-lived/thesaurus/synonyms>