2
unwarrantable
2
vincible
1
aidless
1
bad(adjective, useless, unfit)
1
beyond the pale(expression, idiom)
1
casuistic
1
deficient(adjective, unacceptable)
1
disabled(adjective, useless, unfit)
1
disused(adjective, useless, unfit)
1
dull(adjective, useless, unfit)
1
erroneous
1
exceptionable
1
extreme(adjective, defended, verbal attack)
1
fatherless
1
fishy(absurd, unbelievable, implausible, preposterous, improbable)
1
flimsy(absurd, unwarranted, untrue, implausible, preposterous)
1
friendless
1
guideless
1
ill-founded
1
ill-suited(adjective, useless, unfit)
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APASmart Define. (2016). untenable thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/untenable/thesaurus/synonyms
ChicagoSmart Define. 2016. "untenable thesaurus" https://smartdefine.org/untenable/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, untenable thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/untenable/thesaurus/synonyms>.
MLASmart Define. "untenable thesaurus" 29 March 2016. Web. 25 September 2026. <https://smartdefine.org/untenable/thesaurus/synonyms>