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proclivity

[proh-kliv-i-tee]
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noun, plural pro·cliv·i·ties.
  1. natural or habitual inclination or tendency; propensity; predisposition: a proclivity to meticulousness.
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Origin of proclivity

1585–95; < Latin prōclīvitās tendency, literally, a steep descent, steepness, equivalent to prōclīv(is) sloping forward, steep (prō- pro-1 + clīv(us) slope + -is adj. suffix) + -itās -ity

Synonyms

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bent, leaning, disposition.

Antonyms

aversion.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for proclivity

proclivity

noun plural -ties
  1. a tendency or inclination
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Word Origin

C16: from Latin prōclīvitās, from prōclīvis steep, from pro- 1 + clīvus a slope
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for proclivity

n.

1590s, from Middle French proclivité or directly from Latin proclivitatem (nominative proclivitas) "a tendency, predisposition, propensity," from proclivis "prone to," literally "sloping, inclined," from pro- "forward" (see pro-) + clivus "a slope," from PIE *klei-wo-, suffixed form of *klei "to lean" (see lean (v.)).

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Online Etymology Dictionary, © 2010 Douglas Harper