1814, from indefinable + -ity.

Online Etymology Dictionary, © 2010 Douglas Harper

Examples from the Web for indefinability

  • And, secondly, the assertion of indefinability involves us in a difficulty.

    Creative Intelligence|John Dewey, Addison W. Moore, Harold Chapman Brown, George H. Mead, Boyd H. Bode, Henry Waldgrave, Stuart James, Hayden Tufts, Horace M. Kallen