proclivity
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/icons/point.icon LEANING, PROPENSITY, PROCLIVITY, PENCHANT mean a strong instinct or liking for something.
LEANING suggests a liking or attraction not strong enough to be decisive or uncontrollable.
e.g. a student with artistic leanings
PROPENSITY implies a deeply ingrained and usually irresistible inclination.
e.g. a propensity to offer advice
PROCLIVITY suggests a strong natural proneness usually to something objectionable or evil.
e.g. a proclivity for violence
PENCHANT implies a strongly marked taste in the person or an irresistible attraction in the object.
e.g. a penchant for taking risks
noun (plural proclivities)
a tendency to choose or do something regularly; an inclination or predisposition toward a particular thing:
｟かたく｠ 【特に悪いことに対する】嗜好（しこう）, 傾向, 性癖 «for, to, towards» (→ tendency)
e.g. a proclivity for hard work.
ORIGIN
late 16th century: from Latin proclivitas, from proclivis ‘inclined’, from pro- ‘forward, down’ + clivus ‘slope’.