91 entries under adjective topic. ×

1
unceasing(continuous, permanent, everlasting, uninterrupted)
1
unchangeable
0
confirmed(hardened, chronic)
0
continuous(everlasting, uninterrupted)
0
deep-seated(hardened, confirmed, chronic)
0
ever-present
0
fast
0
habitual(hardened, confirmed, chronic)
0
hard
0
immortal
0
inborn
0
inbred(hardened, confirmed, chronic)
0
incurable(hardened, confirmed, chronic)
0
inextirpable
0
ingrained(hardened, confirmed, chronic)
0
non-breakable
0
non-perishable
0
obstinate(hardened, confirmed, chronic)
0
prolonged(long, drawn-out)
0
protracted(long, drawn-out)
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APASmart Define. (2015). long-lasting thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/long-lasting/thesaurus/synonyms
ChicagoSmart Define. 2015. "long-lasting thesaurus" https://smartdefine.org/long-lasting/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, long-lasting thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/long-lasting/thesaurus/synonyms>.
MLASmart Define. "long-lasting thesaurus" 10 April 2015. Web. 27 September 2026. <https://smartdefine.org/long-lasting/thesaurus/synonyms>