ex·cep·tion·a·ble (ĭk-sěp'shə-nə-bəl) adj. Open or liable to objection or debate; objectionable or debatable. ex·cep'tion·a·bil'i·ty n., ex·cep'tion·a·bly adv.
Usage Note: Exceptionable and exceptional are not interchangeable. Only exceptionable means "objectionable" or "debatable"; exceptional means "uncommon" or "extraordinary."