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.
Looting, firebombing and violence occurred during some nights of the protests, while others were peaceful. Jessie Opoien, jsonline.com, 25 July 2025 However, last year, the final 100-degree day occurred on Oct. 13, setting a record for the latest date that Austin has experienced 100-degree temps. Mary Wasson, Austin American Statesman, 25 July 2025 Leg pain or cramping: Pain or cramping in your legs can occur, especially at night. Scott Sundick, Health, 24 July 2025 Eight other signals occurred over the past three years, after which the stock was higher one month later 75% of the time, averaging a 10.6% gain. Schaeffer's Investment Research, Forbes.com, 24 July 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 29 Jul. 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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