Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
* lapsĭo, ōnis, f. [1. labor], a sliding; trop., an inclination, tendency: haec in bonis rebus facilitas nominetur, in malis proclivitas, ut significet lapsionem, Cic. Tusc. 4, 12, 28.