verb (used without object), co·in·cid·ed, co·in·cid·ing.

to occupy the same place in space, the same point or period in time, or the same relative position: The centers of concentric circles coincide. Our vacations coincided this year.
to correspond exactly, as in nature, character, etc.: His vocation coincides with his avocation.
to agree or concur, as in thought or opinion: Their opinions always coincide.

Origin of coincide

1635–45; < Medieval Latin coincidere, equivalent to Latin co- co- + incidere to befall; see incident
Related formsun·co·in·cid·ed, adjectiveun·co·in·cid·ing, adjective

Synonyms for coincide

Antonyms for coincide Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for coincided

Contemporary Examples of coincided

Historical Examples of coincided

  • If the two coincided in regard to direction, the attack commenced.

    Submarine Warfare of To-day

    Charles W. Domville-Fife

  • Then I sang the Tragala, which coincided with the political views of my friends.


    Charles Godfrey Leland

  • It coincided quite fortuitously with the plans of the Council itself.

    Cubs of the Wolf

    Raymond F. Jones

  • In this, as in most other of Barny's opinions, Peter and Jemmy coincided.

  • But he coincided fully in the propriety of the proposed course.

    Mary S. Peake

    Lewis C. Lockwood

British Dictionary definitions for coincided


verb (intr)

to occur or exist simultaneously
to be identical in nature, character, etc
to agree

Word Origin for coincide

C18: from Medieval Latin coincidere, from Latin co- together + incidere to occur, befall, from cadere to fall
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 coincided



1715, from French coincider (14c.), from Medieval Latin coincidere (in astrological use), literally "to fall upon together," from Latin com- "together" (see co-) + incidere "to fall upon" (in- "upon + cadere "to fall;" see case (n.1)). Related: Coincided; coinciding.

Online Etymology Dictionary, © 2010 Douglas Harper