From Longman Dictionary of Contemporary Englishinconceivablein‧con‧ceiv‧a‧ble /ˌɪnkənˈsiːvəbəl/ AWL adjective IMPOSSIBLEtoo strange or unusual to be thought real or possible A few years ago a car fuelled by solar energy would have been inconceivable. It is inconceivable that a man in such a powerful position could act so unwisely.► see thesaurus at impossible —inconceivably adverb
Examples from the Corpus
inconceivable• The opening of a score of nuclear sites in some six years by conventional administrative procedures alone was inconceivable.• The amount of time and money they have wasted on the project is inconceivable.• It took Mitchell a second to understand what she had done, this inconceivable act; that she had fouled him.• I have too many rejections in my files, and another would be inconceivable at this time.• When I was a boy, having a bath every day was an inconceivable luxury.• To me it seems inconceivable that a single human life on earth is the beginning and end of it all.• It is inconceivable that any corpus should provide occurrences of all of these possibilities.• Many people thought it was inconceivable that the crash could have been an accident.• It's inconceivable that university officials would fire someone as talented and loyal as Professor Schultz.• To him it was inconceivable to be at sea without trailing a hook in the water.• The slaughter to thousands of innocent US citizens would have been inconceivable until recently.• Language is central to individual human development; human society is inconceivable without it.• Life here in this part of Maine is almost inconceivable without wood and woods. 