1
creaky(adjective, hard, firm, solid, stiff)
1
dour
1
fixed(adjective, hard, firm, solid, stiff)
1
flinty
1
frozen(adjective, hard, firm, solid, stiff)
1
fundamentalist
1
graceless(adjective, hard, firm, solid, stiff)
1
grim
1
hard-core
1
hardened(adjective, hard, firm, solid, stiff)
1
hidebound
1
immovable
1
immutable
1
implacable
1
incompliant(adjective, hard, firm, solid, stiff)
1
indurate(adjective, hard, firm, solid, stiff)
1
inexorable
1
intransigent
1
iron
1
ironbound
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APASmart Define. (2015). impliable thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/impliable/thesaurus/synonyms
ChicagoSmart Define. 2015. "impliable thesaurus" https://smartdefine.org/impliable/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, impliable thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/impliable/thesaurus/synonyms>.
MLASmart Define. "impliable thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/impliable/thesaurus/synonyms>