Source : Webster's Revised Unabridged Dictionary (1913)

Incertitude \In*cer"ti*tude\, n. [Cf. F. incertitude, LL.
   incertitudo, fr. L. incertus. See {Incertain}.]
   Uncertainty; doubtfulness; doubt.

         The incertitude and instability of this life.
                                                  --Holland.

         He fails . . . from mere incertitude or irresolution.
                                                  --I. Taylor.

Source : WordNet®

incertitude
     n : the state of being unsure of something [syn: {doubt}, {uncertainty},
          {dubiety}, {doubtfulness}, {dubiousness}] [ant: {certainty}]