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WORDNET DICTIONARY

Adjective unsupportable has 1 sense

• unsupportable(s = adj.all) Array - not able to be supported or defended; Array

CIDE DICTIONARY

OXFORD DICTIONARY

THESAURUS

unsupportable

baseless, controvertible, empty, groundless, idle, ill-founded, insupportable, intolerable, unattestable, unbased, unbearable, unconfirmable, undemonstrable, undemonstratable, unendurable, unfounded, ungrounded, unprovable, unsubstantiatable, unsupported, unsustainable, unsustained, untenable, unverifiable, unwarranted, vain, without basis, without foundation

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