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[dih-kliv-i-tee] /dɪˈklɪv ɪ ti/
noun, plural declivities.
a downward slope, as of ground (opposed to acclivity).
Origin of declivity
1605-15; < L of dēclīvitās a slope, hill, equivalent to dēclīvi(s) sloping downward (dē- de- + clīv(us) slope, hill + -is adj. suffix) + -tās -ty2 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for declivity
  • declivity winds should be renamed updraft deflection winds.
  • Chlorine had hovered in the forest declivity where the five victims lived.
  • The wind could not help blowing under such conditions any more than water can help flowing rapidly down a steep declivity.
  • The bare declivity has evidently been worked, and the auriferous gravel must now be packed from the heights.
British Dictionary definitions for declivity


noun (pl) -ties
a downward slope, esp of the ground Compare acclivity
Derived Forms
declivitous, adjective
Word Origin
C17: from Latin dēclīvitās, from de- + clīvus a slope, hill
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for declivity

1610s, from French déclivité, from Latin declivitatem (nominative declivitas) "a slope, declivity," from declivis "a sloping downward," from de- "down" + clivus "a slope," from PIE *klei-wo-, suffixed form of *klei "to lean" (see lean (v.)).

Online Etymology Dictionary, © 2010 Douglas Harper
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