propensity

/prəˈpɛnsɪtɪ/
a tendency to a particular kind of behaviour （行为方面的）倾向；习性 SYN inclination
~ (for sth/for doing sth)
He showed a propensity for violence.
他表现出暴力倾向。
~ (to do sth)
She has a propensity to exaggerate.
她老是言过其实。