Synonyms|243Antonyms|38|Broader|1Narrower|0Related|60
1
unfading
1
unquenchable
1
unremitting(permanent, long-term, lifelong)
0
quenchless
0
terrible(great, extraordinary, outstanding, notable, unforgettable)
0
accepted
0
accustomed
0
adherent(firm, true, fixed, constant, steadfast)
0
ardent(firm, true, fixed, constant, steadfast)
0
attached(firm, true, fixed, constant, steadfast)
0
built-in
0
cannot be removed
0
changeless
0
chronic(adjective, fixed, deep-seated, in-built)
0
close(firm, true, fixed, constant, steadfast)
0
confirmed(adjective, fixed, deep-seated, in-built)
0
congenital
0
constitutional
0
constrained(firm, true, fixed, constant, steadfast)
0
deep-mouthed
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APASmart Define. (2016). indelible thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/indelible/thesaurus/synonyms
ChicagoSmart Define. 2016. "indelible thesaurus" https://smartdefine.org/indelible/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, indelible thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/indelible/thesaurus/synonyms>.
MLASmart Define. "indelible thesaurus" 29 March 2016. Web. 26 September 2026. <https://smartdefine.org/indelible/thesaurus/synonyms>