What does occur mean?
Occur is a formal verb meaning that something happens, takes place, or is encountered. It is widely used in academic, scientific, legal, and technical writing, where it often replaces the more conversational word “happen.” The phrase “occur to someone” means that an idea or thought comes into that person’s mind. Occur can also describe something being found or present, as in “the species occurs in coastal regions.” Its Latin origin, from occurrere, literally “to run toward” or “to run to meet,” gives the word an image of an event coming into someone’s presence. Although occur may sound formal in casual conversation, it remains common in journalism and professional communication, especially when precision matters.
verbTo happen or take place, especially as an event or circumstance. It can also mean to come into someone’s mind or awareness.
- To happen or take place
- To come into someone’s mind or awareness
- To be found or encountered
"The accident occurred early in the morning, when visibility was poor."
"The error occurred during the final stage of processing."
"It never occurred to me that the weather might affect the results."
The word occur comes from the Latin occurrere, literally “to run toward,” as if an event were coming to meet someone.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does occur come from?
The English word occur comes from Latin occurrere, formed from ob- and currere, both meaning “to run.” The original sense was to run toward or meet, and the word developed into the English meanings of happening, coming to mind, and being encountered. It is related to Latin currere, the source of English words such as current, recur, and cursor.
Related word forms
How occur is actually used
Formal and widely used in professional, academic, and technical writing. In the sense of coming to mind, the usual pattern is “occur to someone.”
Easily confused with occur
Occur is especially common in formal or technical contexts, while happen is more widely used in everyday speech.