Untenable Thesaurus / Antonyms

7	reasonable
6	defensible
6	arguable(adjective, unimaginable, tenable)
4	sound
4	credible(adjective, unsound, unbelievable, believable)
4	justifiable
4	sensible
3	sustainable
3	based on
3	rational
2	logical
2	all-conquering
2	competent
1	tenable
1	available
1	conceivable
1	bearable
1	coherent
1	convincing
1	defendable

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APA	Smart Define. (2016). untenable thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/untenable/thesaurus/antonyms
Chicago	Smart Define. 2016. "untenable thesaurus" https://smartdefine.org/untenable/thesaurus/antonyms (accessed September 25, 2026).
Harvard	Smart Define 2016, untenable thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/untenable/thesaurus/antonyms>.
MLA	Smart Define. "untenable thesaurus" 29 March 2016. Web. 25 September 2026. <https://smartdefine.org/untenable/thesaurus/antonyms>

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