7
lasting(adjective, vast, permanent, lifelong, diurnal)
6
enduring(adjective, lasting, permanent, lifelong)
6
permanent(adjective, vast, lasting, lifelong, diurnal)
5
durable(adjective, lasting, permanent, lifelong)
5
eternal(adjective, vast, permanent, lifelong, diurnal)
5
everlasting(adjective, vast, permanent, lifelong, diurnal)
5
long-range(adjective, advance, view, success, perhaps)
4
continuing(adjective, lasting, permanent, lifelong)
4
perpetual(adjective, permanent, lifelong)
4
undying(adjective, permanent, lifelong)
3
long-run
3
chronic
3
inveterate
3
long
3
long-lived
3
semipermanent
2
abiding(lasting, permanent, lifelong)
2
aged
2
constant(permanent, lifelong)
2
deep-rooted(adjective, permanent, lifelong)
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APASmart Define. (2016). long-term thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/long-term/thesaurus/synonyms
ChicagoSmart Define. 2016. "long-term thesaurus" https://smartdefine.org/long-term/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, long-term thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/long-term/thesaurus/synonyms>.
MLASmart Define. "long-term thesaurus" 26 February 2016. Web. 21 September 2026. <https://smartdefine.org/long-term/thesaurus/synonyms>