45 entries under adjective topic. ×

7
reasonable
6
defensible
6
arguable(unimaginable, tenable)
4
credible(unsound, unbelievable, believable)
4
justifiable
4
sensible
3
sustainable
3
rational
2
logical
2
competent
1
tenable
1
available
1
conceivable
1
coherent
1
convincing
1
plausible
1
watertight
0
allowable
0
authentic
0
admissible
<123>
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APASmart Define. (2016). untenable thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/untenable/thesaurus/antonyms
ChicagoSmart Define. 2016. "untenable thesaurus" https://smartdefine.org/untenable/thesaurus/antonyms (accessed September 27, 2026).
HarvardSmart Define 2016, untenable thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/untenable/thesaurus/antonyms>.
MLASmart Define. "untenable thesaurus" 29 March 2016. Web. 27 September 2026. <https://smartdefine.org/untenable/thesaurus/antonyms>