Synonyms|213Antonyms|56|Broader|2Narrower|0Related|188
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outlandish(absurd, unbelievable, implausible, preposterous, improbable)
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phony(unbelievable, implausible, improbable)
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precarious
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repudiated
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rings phony(expression, absurd, unbelievable, implausible, preposterous)
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sequitur
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sham
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sine
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sine ictu(expression, idiom, impotence)
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sophistical
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spurious
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unbased
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unbelievable(implausible, improbable)
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uncompetitive
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unconvincing(unbelievable, implausible, improbable, unfounded)
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unguarded(adjective, vulnerable, exposed, helpless)
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unimaginable(unbelievable, implausible, improbable)
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unimportant
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unmaintainable
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unmanageable
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APASmart Define. (2016). untenable thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/untenable/thesaurus/synonyms
ChicagoSmart Define. 2016. "untenable thesaurus" https://smartdefine.org/untenable/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, untenable thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/untenable/thesaurus/synonyms>.
MLASmart Define. "untenable thesaurus" 29 March 2016. Web. 26 September 2026. <https://smartdefine.org/untenable/thesaurus/synonyms>