573 entries under adjective topic. ×

2
confirmed(certain, limited, definite, persistent)
2
continuous(certain, steady, persistent, constant)
2
decisive(great, extraordinary, outstanding, notable)
2
deep(great, high, remote, long)
2
deep-seated(fixed, persistent, hardened, lasting)
2
dependable(close, strong, tough, correct)
2
devoted(close, correct, warm, firm)
2
extended(extensive, expanded, lingering, prolonged)
2
fervent(complete, warm, total, passionate)
2
great(extraordinary, important, significant, deep)
2
hard-core(close, correct, firm, honest)
2
hard and fast
2
hearty(strong, sound, tough, fit)
2
heavy(strong, great, sound, tough)
2
immobile(resolute, persistent, dedicated, unwavering)
2
inalterable(certain, limited, definite, inflexible)
2
indulgent(calm, quiet, gentle, restrained)
2
inextinguishable
2
lenient(calm, quiet, gentle, restrained)
2
livelong
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APASmart Define. (2016). enduring thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/enduring/thesaurus/synonyms
ChicagoSmart Define. 2016. "enduring thesaurus" https://smartdefine.org/enduring/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, enduring thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/enduring/thesaurus/synonyms>.
MLASmart Define. "enduring thesaurus" 29 March 2016. Web. 23 September 2026. <https://smartdefine.org/enduring/thesaurus/synonyms>