adj. insupportable or unsupportable, indefensible, unsustainable, unmaintainable, unjustified, unjustifiable, baseless, groundless, unfounded, flawed, faulty, weak, illogical, specious, implausible, unreasonable, unsound It is beyond me why he holds so tenaciously to such untenable views
UNTENABLE
Meaning of UNTENABLE in English
Oxford thesaurus English vocab. Английский словарь Оксфорд тезаурус. 2012