Have you ever wondered whether to write occurring or occuring? You’re not alone. This spelling mistake is easy to make because the two words look almost identical. However, only one is correct in standard English.
Occurring is the correct spelling. It has two r’s at the end of the word occur because the final consonant is doubled when adding -ing. Occuring is a misspelling.
In this guide, you’ll learn why occurring has two r’s, how to use it in sentences, and how to remember the correct spelling without confusion.
What Is the Correct Spelling: Occurring or Occuring?
The correct spelling is occurring, with two r’s at the end of the base word and suffix combination. The spelling occuring is incorrect.
Correct: The same problem is occurring again.
Incorrect: The same problem is occuring again.
What Does Occurring Mean?
Occurring is the present participle of the verb occur. It means happening, taking place, or existing at a particular time.
For example:
- A meeting is occurring in the main office.
- These errors are occurring more frequently.
- A problem is occurring with the computer system.
The word can describe events, situations, problems, and other things that happen or take place.
Why Do People Spell It Occuring?
People often write occuring because they forget to double the final r when adding -ing. Since the pronunciation does not clearly signal the extra letter, the mistake can easily go unnoticed.
Remember that the base word is occur, not ocur. When you add -ing, the spelling becomes occurring.
Why Does Occurring Have Two R’s?
The spelling of occurring follows a common English spelling rule: when a verb ends in a consonant-vowel-consonant pattern and the final syllable is stressed, the final consonant is usually doubled before adding -ing.
The verb occur ends with a stressed final syllable, making the doubled r necessary.
The Spelling Rule Behind Occurring
Follow these simple steps:
- Start with the base verb: occur.
- Identify the final consonant: r.
- Add -ing and double the final r.
- Write the complete word: occurring.
This rule also explains the spelling of several other English verbs.
| Base verb | Correct -ing form |
|---|---|
| Occur | Occurring |
| Prefer | Preferring |
| Refer | Referring |
| Admit | Admitting |
| Begin | Beginning |
Is Occur or Occurr the Correct Base Word?
The correct base word is occur, with one c and one r at the end. You do not write occurr as the standard base form.
However, when adding -ing, the final r is doubled, producing occurring.
Compare the forms:
- Occur base verb
- Occurred past tense
- Occurring present participle
- Occurrence noun
Learning these related forms can help you remember the correct spelling more easily.
How to Use Occurring Correctly in Everyday Writing
The word occurring works in many situations, from everyday conversations to professional reports. It often appears with helping verbs such as is, are, was, and were.
Examples of Occurring in Sentences
Here are some natural examples to help you understand the correct usage.
- Everyday conversation: Something unusual is occurring outside.
- Workplace writing: Several changes are occurring in the company.
- Education: The same mistake is occurring in multiple assignments.
- Technology: An error is occurring whenever I open the application.
- Science: Chemical reactions are occurring inside the container.
- News reporting: Heavy rainfall is occurring across the region.
- Personal experience: A strange thought is occurring to me.
The last example is grammatically possible, but a strange thought is coming to mind sounds more natural in everyday English. You can also say, “It occurred to me that I had forgotten my keys.”
Occurring vs. Occurred vs. Occurrence
These related words have different grammatical functions.
| Word | Part of speech or form | Example |
|---|---|---|
| Occur | Base verb | Mistakes can occur. |
| Occurs | Present-tense verb | The event occurs every year. |
| Occurred | Past-tense verb | The incident occurred yesterday. |
| Occurring | Present participle | The problem is occurring again. |
| Occurrence | Noun | This is a rare occurrence. |
Understanding these differences helps you choose the right word for each sentence.
Common Spelling Mistakes Related to Occurring
Learning occurring can also help you avoid errors in other forms of the same verb.
Occuring vs. Occurring
The difference is one letter, but only one spelling is correct.
- Incorrect: The problem is occuring again.
- Correct: The problem is occurring again.
The easiest solution is to remember the full spelling rather than relying on pronunciation.
Occured vs. Occurred
Another common mistake is writing occured instead of occurred.
- Incorrect: The accident occured last night.
- Correct: The accident occurred last night.
The past-tense form also has a double r.
Occurence vs. Occurrence
The noun occurrence is frequently misspelled as occurence.
- Incorrect: This is an unusual occurence.
- Correct: This is an unusual occurrence.
Remember that the correct noun contains double c and double r: occurrence.
A Real-Life Example: How One Spelling Error Can Affect Your Writing
Imagine a student preparing an important assignment about environmental changes. While describing the effects of climate change, the student writes, “Extreme weather events are occuring more frequently in some regions.”
The sentence communicates the intended meaning, but occuring is misspelled. If the student submits the assignment without proofreading, the mistake may distract the teacher from the quality of the research.
The student might also repeat the same error in other paragraphs, such as when discussing changes occurring in the atmosphere.
Now imagine the student checks the document with a spelling tool. The tool flags occuring and suggests occurring. The student corrects the sentence and reviews related words, including occurred and occurrence.
To make the improvement last, the student writes a simple reminder: “Occur becomes occurring.” During the next assignment, the student remembers to double the final r before adding -ing.
This example illustrates a practical lesson: understanding a spelling pattern is more useful than correcting an isolated typo. It can help students, bloggers, office workers, and other writers avoid similar mistakes in future documents.
Although one spelling error does not automatically make writing unreliable, careful proofreading helps make the final result clearer and more professional.
Occurring or Occuring: What Do We Know About the Correct Spelling?
Dictionary Evidence and Spelling Accuracy
There is no reliable, widely established public statistic available here that measures how frequently people misspell occurring as occuring across all English writing in 2025 or 2026. Inventing a percentage would be misleading.
However, standard English spelling conventions clearly establish that occurring is correct.
Three important points support this conclusion:
- Occurring is the present participle of occur.
- Occurred is the standard past-tense form.
- Occurrence is the standard noun form.
These related spellings follow established English usage. The important takeaway is consistent: occurring is the standard spelling, while occuring is a misspelling.
Frequently Asked Questions
1. Is it occurring or occuring?
Occurring is correct. Occuring is a misspelling. Always write the word with a doubled r when adding -ing to occur.
2. Why does occurring have two r’s?
The verb occur has its stress on the final syllable. When -ing is added, the final r is doubled, producing occurring.
3. Is occurring correct in American and British English?
Yes. Occurring is the standard spelling in both American and British English. There is no regional spelling difference between these forms.
4. What does occurring mean?
Occurring means happening, taking place, or existing in a particular situation.
Example: “Several problems are occurring during the test.”
5. What is the past tense of occur?
The past tense is occurred.
Example: “The problem occurred yesterday.”
6. What is the noun form of occurring?
The related noun is occurrence, meaning an event or the fact that something happens or exists.
Example: “Power outages are a common occurrence during severe storms.”
7. How can I remember the correct spelling of occurring?
Remember the word family:
- Occur
- Occurring
- Occurred
- Occurrence
Pay particular attention to the double r in occurring, occurred, and occurrence.
Conclusion
When deciding between occurring or occuring, always choose occurring. It is the correct spelling of the present participle of occur, meaning happening, taking place, or existing.
The spelling becomes easier when you learn the related forms: occur, occurring, occurred, and occurrence. A simple spelling reminder can help you avoid this mistake in school assignments, emails, reports, and blog posts.
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I’m Muhammad Bilal, the founder of Rule Zenix and a passionate English grammar content creator with one year of experience. I create simple, accurate, and practical guides on grammar, punctuation, vocabulary, and writing to help students, professionals, and English learners improve their communication skills with confidence.
