Synonyms|127Antonyms|46|Broader|0Narrower|1Related|724

28 entries under adjective topic. ×

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impassive
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inaccessible
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inpenetrable
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opaque
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pathless
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resilient
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resistant
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tough
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APASmart Define. (2015). permeable thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/permeable/thesaurus/antonyms
ChicagoSmart Define. 2015. "permeable thesaurus" https://smartdefine.org/permeable/thesaurus/antonyms (accessed September 26, 2026).
HarvardSmart Define 2015, permeable thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/permeable/thesaurus/antonyms>.
MLASmart Define. "permeable thesaurus" 14 April 2015. Web. 26 September 2026. <https://smartdefine.org/permeable/thesaurus/antonyms>