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.
At the time, a United spokesperson confirmed no injuries occurred and the airline arranged for different aircraft to take passengers to their final destination. Colson Thayer, PEOPLE, 21 Nov. 2025 The contract renewal occurred shortly after his previous WWE deal had technically expired. Andrew Ravens‎, MSNBC Newsweek, 21 Nov. 2025 The secretary to the Niger state government, Abubakar Usman, said in a statement that the incident occurred despite prior intelligence warning of heightened threats. CBS News, 21 Nov. 2025 The victim told hospital employees that the incident occurred in the 2200 block of Ridgmar Plaza, in west Fort Worth. Harriet Ramos, Fort Worth Star-Telegram, 21 Nov. 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

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Cite this Entry

“Occur.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/occur. Accessed 25 Nov. 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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