noun, plural de·cliv·i·ties.

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 Unabridged Dictionary, © Random House, Inc. 2019

Related Words for declivity

declination, descent, inclination

Examples from the Web for declivity

Historical Examples of declivity

  • The declivity of the road was gradually becoming more gentle.

  • Behind them, down the declivity toward the village, the people were gathering.

    The World Beyond

    Raymond King Cummings

  • The declivity on which these woods are finishes in a mountain, which rises above the whole.

    A Tour in Ireland

    Arthur Young

  • After they had half mounted the declivity, one was sent back.

    My New Curate

    P.A. Sheehan

  • The declivity was not great and the torrent was otherwise placid.

    A Canyon Voyage

    Frederick S. Dellenbaugh

British Dictionary definitions for declivity


noun plural -ties

a downward slope, esp of the groundCompare acclivity
Derived Formsdeclivitous, adjective

Word Origin for declivity

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 Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

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