215 entries under adjective topic. ×

4
deep
4
final
4
forever(adverb, constant, vast, enduring)
4
indissoluble(strong, enduring, united, everlasting)
4
ineradicable
4
irretrievable(fixed, unchangeable, unalterable)
4
lifelong(hardened, lasting, confirmed, perpetual)
4
persisting(steady, stable, persistent, constant)
4
remaining
4
rooted(verb, secure, usual, steady)
4
tough(calm, strong, solid, steady)
4
unlimited(endless, infinite, boundless, incessant)
4
unvaried
3
deep-rooted(calm, strong, solid, steady)
3
equable(calm, strong, secure, firm)
3
habitual(usual, steady, stable, regular)
3
immovable(secure, firm, true, steady)
3
monumental
3
undeviating
2
fatal
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APASmart Define. (2016). permanent thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/permanent/thesaurus/synonyms
ChicagoSmart Define. 2016. "permanent thesaurus" https://smartdefine.org/permanent/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, permanent thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/permanent/thesaurus/synonyms>.
MLASmart Define. "permanent thesaurus" 26 February 2016. Web. 21 September 2026. <https://smartdefine.org/permanent/thesaurus/synonyms>