6
unremitting(adjective, steady, stable, persistent, constant)
6
unwavering(calm, strong, firm, solid, true)
5
evergreen
5
faithful(firm, true, fixed, constant, steadfast)
5
loyal(firm, true, fixed, constant, steadfast)
5
solid(adjective, calm, strong, secure, steady)
5
unfading(adjective, fixed, constant, vast, enduring)
5
unrelenting(adjective, persistent, constant, continuous, endless)
4
coiffure(noun, hairstyle)
4
dead in the water
4
deep
4
final
4
forever(adjective, adverb, constant, vast, enduring)
4
indissoluble(adjective, strong, enduring, united, everlasting)
4
ineradicable
4
irretrievable(adjective, fixed, unchangeable, unalterable)
4
lifelong(adjective, hardened, lasting, confirmed, perpetual)
4
perm(noun, ponytail)
4
persisting(adjective, steady, stable, persistent, constant)
4
remaining
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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>