Found 2 items, similar to unsupportable.
English → English (WordNet) Definition: unsupportable unsupportable adj : not able to be supported or defended
English → English (gcide) Definition: Unsupportable Unsupportable \Un`sup*port"a*ble\, a. Insupportable; unendurable. -- Un`sup*port"a*ble*ness, n. --Bp. Wilkins. -- Un`sup*port"a*bly, adv. [1913 Webster]