n. pl. pro·cliv·i·ties A natural propensity or inclination; a predisposition: a proclivity for exaggeration; a proclivity to complain. [Latin prōclīvitās, from prōclīvis, inclined : prō-, forward; see PRO-1 + clīvus, slope; see klei- in the Appendix of Indo-European roots.] |
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