English Reference
verb

coincide

v.
US /ˌkoʊɪnˈsaɪd/ UK /kˌəʊɪnsˈaɪd/ co·in·cide UK spelling coincided, coincides, coinciding

  1. 01 C1 Advanced Academic

    to be the same as someone else's ideas, opinions, or plans.

    to correspond exactly or be in agreement; to be identical in nature or character.

    Simple

    Our interests coincide on this project, so it makes sense to work together.

    In context

    The findings of the independent study coincide perfectly with the data collected by the university over the last decade.

    Usage

    Often used with 'with' when comparing two specific things.

  2. 02 C2 Proficiency Technical Math

    to be in the exact same place or position as something else.

    to occupy the same relative position or the same area in space.

    Simple

    On the map, the two boundary lines coincide for several miles along the river.

    In context

    In this geometric proof, the student must demonstrate that the two triangles coincide exactly when one is rotated onto the other.

    Usage

    Common in geometry and technical mapping contexts.

Usage coincide with · necessarily coincide

These setbacks have coincided with the total solar eclipse in Spain, which made El Prat airport even busier than usual during the peak summer season.

The Local· 14 Aug 2026

Saudi Arabia has hosted the competition since 2020 but was ruled out as the dates coincide with the Asian Cup, the continent's premier men's international football tournament.

The Local· 14 Aug 2026

From French coïncider, from Medieval Latin coincidere, from con- + incidere, from in- (“into, to”) + cadere (“to fall, fall down, drop”).

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry
Origin la-med coincido
Level C1 · Advanced
Frequency Frequent
Updated