121 entries under adjective topic. ×

19
indefensible(weak, vulnerable, submission, helpless)
17
invalid(false, useless, reasoning, unfit)
17
unsound(false, reasoning, defended, indefensible)
15
unsustainable(unfounded, defended, verbal attack)
12
illogical(sense, reasoning, defended, indefensible)
12
unfounded(false, defended, verbal attack)
11
unjustifiable(unwarranted, untrue, flimsy, unfounded)
11
insupportable(defended, verbal attack)
11
vulnerable(exposed, helpless)
9
fallacious(false, reasoning)
9
faulty(false, useless, unfit)
9
unreasonable(reasoning, defended, verbal attack)
8
groundless(reasoning, defended, verbal attack)
8
baseless
8
weak(vulnerable, shallow, flimsy, exposed)
7
unacceptable(unacceptable, defended, verbal attack)
6
defenseless(vulnerable, exposed, helpless, impotence)
5
flawed
5
incredible(unbelievable, implausible, improbable)
5
specious
<12345…7>
10 years ago|8.6k views|share |citing 
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>