verb

occur

uh-KUR/əˈkɜːr/

To take place.

A lightning strike occurs, breaking a branch from the tree.

Show an event occurring through a compact three-stage sequence: an intact tree beneath a storm cloud, a lightning strike breaking one branch, and the same tree immediately afterward with the branch on the ground.
Etymology

“Running toward” people gives the image of meeting them. The meaning shifted from “meet” to “present itself” and then to “happen”: an event presents itself in the course of affairs.

In context

The Scottish Parliament13:37
notifications to Government under the HIIAT procedure happen when two or more linked cases of infection occur
First Minister's Questions - 9 December 2021

More examples

  • The accident occurred just before sunrise.
  • Power outages are occurring more often this summer.
  • If an error occurs, restart the program.

Forms

occur · occurs · occurred · occurring

occurrence noun — An event or instance of something happening.

Similar words

happen
The everyday alternative; occur sounds more formal or technical.
arise
Suggests a problem or situation emerging, not just taking place.