inconˌtestaˈbilityrare. [f. next: see -ity. Cf. F. incontestabilité.] The quality of being incontestable; an indisputable fact. 1862Wraxall Hugo's ‘Misérables’ v. xxviii. (1877) 17 Under the pressure of this incomprehensible incontestability he felt his brain cracking.1864in Webster.