• synonyms


noun, plural ac·cliv·i·ties.
  1. an upward slope, as of ground; an ascent (opposed to declivity).
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Origin of acclivity

1605–15; < Latin acclīvitās, equivalent to acclīv(is) steep (ac- ac- + -clīvis, adj. derivative of clīvus slope) + -itās -ity
Related formsac·cliv·i·tous, ac·cli·vous [uh-klahy-vuh s] /əˈklaɪ vəs/, adjectiveun·ac·cliv·i·tous, adjectiveun·ac·cliv·i·tous·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for acclivitous

Historical Examples of acclivitous

  • Herds of agile creatures like antelopes were seen in the moon, "abounding in the acclivitous glades of the woods."

    The Contemporary Review, Volume 36, November 1879


  • Then herds of agile creatures like antelopes are described, 'abounding on the acclivitous glades of the woods.'

British Dictionary definitions for acclivitous


noun plural -ties
  1. an upward slope, esp of the groundCompare declivity
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Derived Formsacclivitous or acclivous (əˈklaɪvəs), adjective

Word Origin for acclivity

C17: from Latin acclīvitās, from acclīvis sloping up, steep
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 acclivitous



1610s, from Latin acclivitatem (nominative acclivitas) "an ascending direction, an upward steepness," from acclivis "mounting upwards, ascending," from ad- "up" (see ad-) + clivus "hill, 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