35 entries under true topic. ×

15
permanent(adjective, firm, fixed, constant)
13
lasting(adjective, great, firm, extraordinary)
8
fixed(adjective, firm, constant, steadfast)
4
constant(adjective, firm, fixed, steadfast)
2
impregnable(firm, fixed, constant, steadfast)
1
durable(adjective, firm, fixed, constant)
1
stable(firm, fixed, constant, steadfast)
0
adherent(firm, fixed, constant, steadfast)
0
ardent(firm, fixed, constant, steadfast)
0
attached(firm, fixed, constant, steadfast)
0
close(firm, fixed, constant, steadfast)
0
constrained(firm, fixed, constant, steadfast)
0
faithful(firm, fixed, constant, steadfast)
0
fastened(firm, fixed, constant, steadfast)
0
firm(fixed, constant, steadfast, immovable)
0
fortified(firm, fixed, constant, steadfast)
0
glued(firm, fixed, constant, steadfast)
0
held(firm, fixed, constant, steadfast)
0
immovable(firm, fixed, constant, steadfast)
0
inextricable(firm, fixed, constant, steadfast)
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APASmart Define. (2016). indelible thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/indelible/thesaurus/synonyms
ChicagoSmart Define. 2016. "indelible thesaurus" https://smartdefine.org/indelible/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, indelible thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/indelible/thesaurus/synonyms>.
MLASmart Define. "indelible thesaurus" 29 March 2016. Web. 27 September 2026. <https://smartdefine.org/indelible/thesaurus/synonyms>