Dictionary (a.) Insupportable; unendurable.Thesaurus 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 |