Source : Webster's Revised Unabridged Dictionary (1913)

Propension \Pro*pen"sion\, n. [L. propensio: cf. F. propension.
   See {Propend}, {Propense}.]
   The quality or state of being propense; propensity. --M.
   Arnold.

         Your full consent Gave wings to my propension. --Shak.