Synonyms|108Antonyms|10|Broader|0Narrower|0Related|162

22 entries under tough topic. ×

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inflexible(hard, solid, rigid)
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rigid(hard, solid, inflexible)
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APASmart Define. (2015). nonporous thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/nonporous/thesaurus/synonyms
ChicagoSmart Define. 2015. "nonporous thesaurus" https://smartdefine.org/nonporous/thesaurus/synonyms (accessed October 1, 2026).
HarvardSmart Define 2015, nonporous thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/nonporous/thesaurus/synonyms>.
MLASmart Define. "nonporous thesaurus" 14 April 2015. Web. 1 October 2026. <https://smartdefine.org/nonporous/thesaurus/synonyms>