34 entries under permanent topic. ×

11
perennial(adjective, familiar, established, hardened, enduring)
7
continuing(adjective, familiar, fixed, persistent, lasting)
7
eternal(adjective, durable, recurrent, perpetual)
6
durable(adjective, durable, recurrent, perpetual)
6
lasting(adjective, fixed, persistent, durable)
6
old(adjective, familiar, established, hardened, traditional)
6
perpetual(adjective, familiar, established, durable)
4
constant(adjective, familiar, fixed, persistent, established)
4
endless(long-term, diuturnity)
4
everlasting(adjective, durable, recurrent, perpetual)
4
long-lasting(adjective, familiar, established, hardened, lasting)
3
incessant(adjective, durable, recurrent, perpetual)
2
abiding(adjective, fixed, persistent, hardened, lasting)
2
continual(adjective, fixed, persistent, continuous, lasting)
2
fixed(verb, persistent, continuous, hardened, lasting)
2
indissoluble(adjective, long-term)
2
undying(adjective, recurrent, perpetual, long-term)
1
deep-rooted(adjective, fixed, persistent, hardened, lasting)
1
forever
1
in for the long haul(expression, idiom, long-term)
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APASmart Define. (2015). lifelong thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/lifelong/thesaurus/synonyms
ChicagoSmart Define. 2015. "lifelong thesaurus" https://smartdefine.org/lifelong/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, lifelong thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/lifelong/thesaurus/synonyms>.
MLASmart Define. "lifelong thesaurus" 14 April 2015. Web. 27 September 2026. <https://smartdefine.org/lifelong/thesaurus/synonyms>