Definition of propensity noun from the Oxford Advanced Learner's Dictionary

 

propensity

 noun
noun
BrE BrE//prəˈpensəti//
 
; NAmE NAmE//prəˈpensəti//
 
(pl. propensities)(formal)
 
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a tendency to a particular kind of behaviour synonym inclination propensity (for something/for doing something) He showed a propensity for violence. They all knew about his propensity for violence. propensity (to do something) She has a propensity to exaggerate. There is an increased propensity for people to live alone. Word Origin late 16th cent.: from archaic propense (from Latin propensus ‘inclined’, past participle of propendere, from pro- ‘forward, down’ + pendere ‘hang’) + -ity.
See the Oxford Advanced American Dictionary entry: propensity