occur

verb

oc·​cur ə-ˈkər How to pronounce occur (audio)
occurred; occurring ə-ˈkər-iŋ How to pronounce occur (audio)
-ˈkə-riŋ

intransitive verb

1
: to be found or met with : appear
This bird occurs in New England in the spring.
2
: to come into existence : happen
The accident occurred at 5 p.m.
3
: to come to mind
an idea that has occurred to me

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The Meaning of Occur and the Spelling of Its Forms

Occur has three meanings. It means "to be found or met with; appear," as in "a phenomenon that occurs around the world"; it means "to come into existence; happen," as in "an event that occurred on Friday"; and it means "to come to mind," as in "it occurs to me that the word is quite useful."

It's an unusual-looking word, being so small but with two c's up against each other, and then just a simple r at the end. The r is doubled, though, for the past tense: occurred. And the double r continues in the present participle: occurring.

Examples of occur in a Sentence

The event is scheduled to occur at noon tomorrow. No one was ready for what was about to occur. There's a chance that a similar event will occur in the future. The disease tends to occur in children under the age of five. The plant occurs naturally throughout South America.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
An astounding transfer of national wealth from indigenous lands to U.S. banks and corporations occurred. Brad Wolf, Twin Cities, 7 Feb. 2025 Flash flood emergencies are the most severe level of flash flood warning and indicate that life-threatening flooding is occurring. Mary Gilbert, CNN, 6 Feb. 2025 Bringing in an independent arbitrator to review both sides’ arguments typically occurs when contract discussions are stalled or there is a stalemate and is a required step before the union can go on strike. Ikram Mohamed, Chicago Tribune, 6 Feb. 2025 Another critical transition also occurs at a specific point in time in the process by which normal cells are transformed into cancer cells, as the result of an accumulation of both genetic and epigenetic changes. Thomas G. Moukawsher, Newsweek, 6 Feb. 2025 See all Example Sentences for occur 

Word History

Etymology

borrowed from Latin occurrere "to run to meet, confront in a hostile manner, be met, present itself (to the mind)," from oc-, assimilated variant of ob- ob- + currere "to run, roll, move swiftly" — more at current entry 1

First Known Use

15th century, in the meaning defined at sense 1

Time Traveler
The first known use of occur was in the 15th century

Dictionary Entries Near occur

Cite this Entry

“Occur.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/occur. Accessed 10 Feb. 2025.

Kids Definition

occur

verb
oc·​cur ə-ˈkər How to pronounce occur (audio)
occurred; occurring -ˈkər-iŋ How to pronounce occur (audio)
1
: to be found or met with : appear
plants that occur in meadows
2
: to come into existence : happen
an accident occurred on the way to school
success doesn't just occur, it is earned
3
: to come into the mind
it just occurred to me
Etymology

from Latin occurrere "to be found or met with, appear," literally, "to run up against," from oc-, ob- "in the way" and currere "to run" — related to current, incur

More from Merriam-Webster on occur

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