36 entries under firm topic. ×

15
permanent(adjective, true, fixed, constant)
13
lasting(adjective, great, extraordinary, true)
8
fixed(adjective, true, constant, steadfast)
6
fast(adjective, continue, constant, steadfast)
4
constant(adjective, true, fixed, steadfast)
2
impregnable(true, fixed, constant, steadfast)
1
durable(adjective, true, fixed, constant)
1
stable(true, fixed, constant, steadfast)
0
adherent(true, fixed, constant, steadfast)
0
ardent(true, fixed, constant, steadfast)
0
attached(true, fixed, constant, steadfast)
0
close(true, fixed, constant, steadfast)
0
constrained(true, fixed, constant, steadfast)
0
faithful(true, fixed, constant, steadfast)
0
fastened(true, fixed, constant, steadfast)
0
fortified(true, fixed, constant, steadfast)
0
glued(true, fixed, constant, steadfast)
0
held(true, fixed, constant, steadfast)
0
immovable(true, fixed, constant, steadfast)
0
inextricable(true, fixed, constant, steadfast)
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APASmart Define. (2016). indelible thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/indelible/thesaurus/synonyms
ChicagoSmart Define. 2016. "indelible thesaurus" https://smartdefine.org/indelible/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, indelible thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/indelible/thesaurus/synonyms>.
MLASmart Define. "indelible thesaurus" 29 March 2016. Web. 28 September 2026. <https://smartdefine.org/indelible/thesaurus/synonyms>