Webster’s Revised Unabridged Dictionary · 1913 Propension Pro·pen′sion (·pĕn′shŭn), 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. ‹ Propense Propensity ›