pronity means proneness to do something; propensity. Lexicurio rates it Sui generis — a strength score of 87 out of 100.
noun
- Proneness to do something; propensity.“For I have very much vvondred at the devotedneſs of ſome Mens Spirits to the pretence of pure Mechaniſm in the ſolving of the Phænomena of the Univerſe, vvho yet othervviſe have not been of leſs Pretenſions to Piety and Vertue. Of vvhich Mechanick pronity I do not ſee any good tendency at all.”