28 entries under rigor topic. ×

1
inexorableness(perseverance, obstinacy, stubbornness, inflexibility)
1
inflexibleness(perseverance, obstinacy, stubbornness, inflexibility)
1
intransigency(noun, perseverance, obstinacy, stubbornness, inflexibility)
1
obdurateness(perseverance, obstinacy, stubbornness, inflexibility)
1
relentlessness(perseverance, obstinacy, stubbornness, inflexibility)
1
remorselessness(perseverance, obstinacy, stubbornness, inflexibility)
1
rigidity(noun, perseverance, obstinacy, stubbornness, inflexibility)
1
rigidness(perseverance, obstinacy, stubbornness, inflexibility)
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APASmart Define. (2015). mulishness thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/mulishness/thesaurus/synonyms
ChicagoSmart Define. 2015. "mulishness thesaurus" https://smartdefine.org/mulishness/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, mulishness thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/mulishness/thesaurus/synonyms>.
MLASmart Define. "mulishness thesaurus" 14 April 2015. Web. 28 September 2026. <https://smartdefine.org/mulishness/thesaurus/synonyms>