18 entries under defended topic. ×

19
indefensible(adjective, weak, vulnerable, submission, helpless)
17
unsound(adjective, false, reasoning, indefensible)
15
unsustainable(adjective, unfounded, verbal attack)
12
illogical(adjective, sense, reasoning, indefensible)
12
unfounded(adjective, false, verbal attack)
11
unjustifiable(adjective, unwarranted, untrue, flimsy, unfounded)
11
insupportable(adjective, verbal attack)
9
unreasonable(adjective, reasoning, verbal attack)
8
groundless(adjective, reasoning, verbal attack)
7
unacceptable(adjective, unacceptable, verbal attack)
3
objectionable(adjective, verbal attack)
2
absurd(adjective, irrational, implausible, preposterous)
2
ridiculous(adjective, absurd, implausible, preposterous, improbable)
1
extreme(adjective, verbal attack)
1
inexplicable(adjective, verbal attack)
1
irrational(adjective, verbal attack)
1
outrageous(adjective, verbal attack)
1
unexplainable(adjective, verbal attack)
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APASmart Define. (2016). untenable thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/untenable/thesaurus/synonyms
ChicagoSmart Define. 2016. "untenable thesaurus" https://smartdefine.org/untenable/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, untenable thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/untenable/thesaurus/synonyms>.
MLASmart Define. "untenable thesaurus" 29 March 2016. Web. 28 September 2026. <https://smartdefine.org/untenable/thesaurus/synonyms>