impossible
im.pos.si.ble \(')im-'pa:s-*-b*l\ \-ble-\ aj [ME, fr. MF & L; MF, fr. L impossibilis, fr. in- + possibilis] possible 1a: incapable of being or of occurring 1b: felt to be incapable of being done, attained, or fulfilled : insuper ably difficult : HOPELESS 2a: extremely undesirable : UNACCEPTABLE 2b: markedly difficult to deal with : OBJECTIONABLE - im.pos.si.ble.ness n