7
inflexible(adjective, set, hard, stiff, rigid)
6
rigid(adjective, set, hard, stiff, resolute)
5
stubborn(adjective, change, position, attitude, determination)
4
obstinate(adjective, set, hard, stiff, rigid)
3
adamant(adjective, hard, resolute, rigid, inflexible)
3
determined(adjective, hard, resolute, rigid, inflexible)
3
fixed(adjective, set, hard, stiff, rigid)
3
resolute(adjective, hard, rigid, inflexible, strict)
3
unbending(adjective, hard, rigid, inflexible, strict)
3
uncompliant(adjective, set, hard, stiff, rigid)
3
uncompromising(adjective, set, hard, stiff, rigid)
2
adamantine(adjective, hard, resolute, rigid, inflexible)
2
dogged(adjective, set, hard, stiff, rigid)
2
firm(adjective, hard, rigid, inflexible, strict)
2
hard(adjective, set, stiff, resolute, rigid)
2
immovable(adjective, hard, rigid, inflexible, strict)
2
immutable(adjective, set, hard, stiff, rigid)
2
inelastic(adjective, unflexible)
2
intractable(adjective, set, hard, stiff, rigid)
2
obdurate(adjective, hard, resolute, rigid, inflexible)
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APASmart Define. (2016). unadaptable thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/unadaptable/thesaurus/synonyms
ChicagoSmart Define. 2016. "unadaptable thesaurus" https://smartdefine.org/unadaptable/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, unadaptable thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/unadaptable/thesaurus/synonyms>.
MLASmart Define. "unadaptable thesaurus" 29 March 2016. Web. 22 September 2026. <https://smartdefine.org/unadaptable/thesaurus/synonyms>