Have you ever typed a word, looked at it twice, and suddenly wondered whether you added one letter too many? That happens often with words that change when we add a suffix. occurring vs occuring is one of those spelling questions that can stop a sentence in its tracks. ✍️
The good news is that the rule is much easier than it first appears.
Occurring is the correct spelling in standard US English. Occuring is a misspelling.
The extra r may look strange at first, but it has a clear reason.
The base word is occur, and when we add -ing, the final consonant is doubled. This gives us occurring.
I have seen this mistake in student essays, work emails, online posts, and even quick notes.
It is especially easy to make when typing fast because both versions look almost identical.
In this guide, I will show you exactly why occurring is correct, why occuring is wrong, how to remember the difference, and how to use the word naturally in different types of writing. 😊 Laid vs Layed | Theater vs Theatre | Yea vs Nay
🎯 Quick Answer: Occurring vs Occuring

Occurring is the correct spelling. Occuring is incorrect because the final r in occur is doubled before adding -ing.
For example:
- ✅ The meeting is occurring at noon.
- ❌ The meeting is occuring at noon.
The easiest rule to remember is: occur + ing = occurring.
Related Word Forms of Occur
The word occur has several related forms. Knowing them can make the spelling rule easier to remember because you can see how the word changes in different sentences.
| Form | Type | Example |
|---|---|---|
| occur | Base verb | Accidents can occur at any time. |
| occurs | Third-person singular verb | The problem occurs every week. |
| occurred | Past tense | The error occurred yesterday. |
| occurring | Present participle | The change is occurring now. |
| occurrence | Noun | The event was a rare occurrence. |
Notice the double r in occurred and occurring. That repeated consonant is a key part of the spelling pattern.
🎯 Understanding the Basics of Occurring vs Occuring
The basic difference is simple: occurring follows the standard spelling rule for the verb occur, while occuring drops an r that should remain. When comparing occurring vs occuring, the main issue is simply correct spelling.
The word occur ends in a consonant after a stressed short vowel sound. When the suffix -ing is added, the final consonant is doubled.
So:
occur + ing → occurring
Not:
occur + ing → occuring
Here is the difference at a glance:
| Form | Type | Meaning | Example | Correct/Incorrect |
|---|---|---|---|---|
| occurring | Present participle | Happening or taking place | The event is occurring now. | ✅ Correct |
| occuring | Misspelled form | Intended to mean happening | The event is occuring now. | ❌ Incorrect |
| occur | Base verb | To happen or take place | Problems may occur. | ✅ Correct |
| occurred | Past tense | Happened in the past | A delay occurred. | ✅ Correct |
Why the Extra R Matters
The spelling occurring comes directly from occur. We do not remove the final r before adding -ing.
Think of it as building the word in two steps:
- Start with occur.
- Add -ing.
- Double the final r.
- Write occurring.
This is why occuring is not the accepted spelling.
Is Occurring the Same as Occuring?
No. Occurring and occuring are not two accepted spellings of the same word. Only occurring is correct in standard English.
The difference is just one letter, but that letter changes whether the spelling is correct.
| Spelling | Status | Explanation |
|---|---|---|
| occurring | ✅ Correct | Standard spelling |
| occuring | ❌ Incorrect | Missing one r |
| occur | ✅ Correct | Base verb |
| occurred | ✅ Correct | Past-tense form |
| occurrence | ✅ Correct | Noun form |
If you are writing a school paper, resume, report, article, or professional email, use occurring.
Occurring: Meaning and Correct Use
Occurring means happening, taking place, or existing at a particular time or in a particular situation.
It is the -ing form of occur.
For example:
The storm is occurring along the coast.
Here, occurring tells us that the storm is happening.
Another example:
Several changes are occurring in the company.
Here, occurring means that the changes are taking place.
Sentence Breakdown
Consider this sentence:
A strange noise was occurring outside.
- A strange noise = subject
- was = helping verb
- occurring = main verb form
- outside = tells us where
The word works naturally because the sentence describes something happening.
Common Uses of Occurring
You may see occurring in sentences about:
- Events
- Problems
- Changes
- Accidents
- Natural events
- Trends
- Mistakes
- Processes
- Situations
| Meaning | Word Type | Example Sentence |
|---|---|---|
| Happening | Verb form | A storm is occurring nearby. |
| Taking place | Verb form | The ceremony is occurring today. |
| Developing or taking place | Verb form | Major changes are occurring at work. |
💡 Test Tip
When you are unsure whether to write occurring or occuring, remove -ing.
If the base word is occur, keep the final r and double it:
occur → occurring
This quick test works better than trying to decide whether the word “looks right.”
Why Do People Confuse Occurring and Occuring?
People confuse these spellings because the difference is visually small. Both versions sound the same when spoken, so pronunciation does not help much. Understanding occurring vs occuring becomes easier when you focus on the base word occur.
Another reason is that writers often remember the base word occur but forget what happens when -ing is added.
I once reviewed a short student paragraph that used occuring three times. The student knew the meaning perfectly. The problem was not vocabulary. It was the spelling pattern. Once we wrote occur → occurring on the page, the mistake became much easier to understand.
Fast typing also makes this error common. Your fingers may simply skip the second r, especially when you already know what you want to say.
| Reason for Confusion | What Happens |
|---|---|
| Fast typing | One r may be skipped. |
| Visual similarity | Both spellings look almost the same. |
| Sound | The two spellings usually sound the same. |
| Memory | Writers may forget the spelling rule. |
| Autocorrect | A device may not always catch a misspelling. |
The key is to focus on the base word rather than the sound.
Key Differences Between Occurring and Occuring
The most important difference is spelling. Occurring is a standard English word. Occuring is not the correct standard spelling.
| Feature | Occurring | Occuring |
|---|---|---|
| Correct spelling | Yes | No |
| Based on occur | Yes | Intended to be |
| Double r | Yes | No |
| Used in formal writing | Yes | No |
| Means happening | Yes | Intended meaning |
| Recommended | Yes | No |
A useful memory trick is to picture the word as:
OCC + URR + ING
The middle rr can remind you that occur keeps its final r and doubles it before -ing.
How Does the Spelling Rule Work?
The spelling rule explains why occurring has two r letters at the end of the base word before -ing.
When certain short verbs receive a suffix beginning with a vowel, the final consonant can be doubled. The verb occur follows this pattern.
The base word is:
occur
Add:
-ing
The result is:
occurring
The spelling is not created by simply placing ing after the word without any change. The final consonant is doubled.
This gives us:
| Base Word | Suffix | Correct Result |
|---|---|---|
| occur | -ing | occurring |
| occur | -ed | occurred |
| occur | -s | occurs |
| occur | -ence | occurrence |
The pattern is especially useful because it connects several related forms.
Grammar Rules Explanation
The correct form is occurring because occur ends with r, and the spelling pattern calls for the final consonant to be doubled before -ing.
The incorrect form occuring treats the word as though we can simply remove nothing and add -ing without doubling the final consonant. That does not produce the standard spelling.
Most standard English reference works agree on the spelling occurring. The rule is also consistent with common English spelling patterns for certain verbs.
There is no special meaning difference between the two forms. Occuring is simply a misspelling of occurring.
Correct vs Incorrect at a Glance
The fastest way to learn the distinction is to compare real sentences.
| Sentence | Correct/Incorrect | Why |
|---|---|---|
| The accident is occurring near the highway. | ✅ Correct | Occurring is the correct -ing form. |
| The accident is occuring near the highway. | ❌ Incorrect | The word needs the second r. |
| Several changes are occurring this month. | ✅ Correct | The spelling follows occur + -ing. |
| Several changes are occuring this month. | ❌ Incorrect | Occuring is misspelled. |
| The problem keeps occurring. | ✅ Correct | The final r is doubled. |
📝 Case Study: A Workplace Email
Imagine that a manager wants to explain a repeated software problem.
A rushed email might say:
“We are aware of an issue occuring during the checkout process.”
The meaning is clear, but the spelling is wrong.
A polished version would say:
“We are aware of an issue occurring during the checkout process.”
That small correction matters because professional writing should be easy to trust and easy to read.
I once caught myself typing occuring in a work note. I stopped because the word looked slightly wrong. I checked the base word and immediately saw the answer: occur has two r letters already, so occurring needs two r letters as well.
What the Case Shows
| Version | Result | Reason |
|---|---|---|
| An issue occuring | ❌ | Missing an r |
| An issue occurring | ✅ | Standard spelling |
| The issue occurred | ✅ | Correct past form |
| The issue may occur | ✅ | Correct base form |
The lesson is simple: when writing quickly, pause on words that contain repeated letters.
⚠️ Common Mistakes With Occurring
Most errors with this word come from memory, speed, or confusion about suffix spelling. The occurring vs occuring spelling mistake is easy to fix once you remember the double r.
The most common problem is dropping one r.
| Wrong Form | What’s Wrong | Correct Form |
|---|---|---|
| occuring | Missing one r | occurring |
| occurr ing | Incorrect spacing | occurring |
| occuringly | Incorrect spelling and form | occurring |
| occurrring | Too many r letters | occurring |
| occuring now | Missing an r | occurring now |
| is occuring | Misspelled verb form | is occurring |
Some mistakes are obvious once you slow down. Others can look believable because the incorrect version is only one letter away from the correct one.
Similar Grammar and Spelling Confusions
This problem is not unique. English has many pairs that look or sound similar.
| Confusion | Correct Form | Common Error |
|---|---|---|
| its / it’s | its / it’s | Mixing possession and contraction |
| your / you’re | your / you’re | Mixing possession and contraction |
| their / they’re | their / they’re | Mixing possession and contraction |
| affect / effect | affect / effect | Confusing related meanings |
| then / than | then / than | Mixing time and comparison |
| occurring / occuring | occurring | Dropping an r |
These errors happen for several practical reasons.
- Fast typing: Your fingers can skip letters.
- Autocorrect: A spelling tool may not always fix every error.
- Lack of knowledge: You may know the word but not the spelling rule.
- Sound-based spelling: You may spell from what you hear.
- Visual memory: An incorrect version can start to look familiar.
The best defense is a short mental check.
Ask:
What is the base word?
For this word, the answer is occur.
Then build it:
occur + ing = occurring
Does Occurring Have More Than One Use?
Yes. Occurring can describe many things that happen or take place. Its exact meaning depends on the sentence around it.
It can describe an event happening now, a repeated problem, or a change taking place.
| Situation | Example | Meaning |
|---|---|---|
| Event | The ceremony is occurring today. | Taking place |
| Problem | The error is occurring again. | Happening |
| Change | Rapid changes are occurring. | Taking place |
| Natural event | Heavy rain is occurring in the area. | Happening |
| Repeated action | The same issue keeps occurring. | Happening repeatedly |
The core idea stays the same: something is happening or taking place.
Usage in Different Contexts
The correct spelling remains occurring no matter where you use it. What changes is the style of the sentence.
| Context | Which Term to Use | Example |
|---|---|---|
| Everyday conversation | occurring | What’s occurring over there? |
| Professional writing | occurring | Several delays are occurring. |
| Creative writing | occurring | Strange events were occurring around the house. |
| Social media/texting | occurring | Something weird is occurring 😂 |
In casual conversation, people may choose simpler words such as happening. In formal writing, occurring can fit well when the sentence needs a more precise or neutral tone.
Common Phrases With Occurring
There are several useful combinations with occurring. They are not special idioms, but they are natural phrases that appear often in English.
| Phrase | Meaning |
|---|---|
| occurring at the same time | Happening together |
| occurring frequently | Happening often |
| occurring regularly | Happening on a regular basis |
| occurring naturally | Happening without being caused by people |
| occurring during the day | Happening during daytime |
| occurring over time | Happening across a period |
For example:
Several problems are occurring at the same time.
Or:
The changes are occurring naturally over time.
These phrases are useful in reports, explanations, articles, and everyday speech.
How To Remember the Difference
A simple memory trick can save you from this spelling error. A simple way to remember occurring vs occuring is to start with the base word occur.
Think:
OCCUR has two R’s. OCCURRING keeps the double R.
You can also use the short chain:
occur → occurring → occurred
All three forms remind you that the word contains repeated r letters when the ending requires the spelling change.
Here are three quick memory steps:
- Find the base word: occur.
- Add the ending: -ing.
- Double the final r: occurring.
Another useful trick is to connect occurring with occurred. If you know that occurred has two r letters, it becomes easier to remember that occurring does too.
Can You Use Occuring in Any Situation?
No. Occuring is not a standard alternative spelling of occurring. You should not use it in formal or informal standard English.
If you see occuring in a draft, correct it to occurring.
| Writing Situation | Use Occurring? | Use Occuring? |
|---|---|---|
| School assignment | ✅ Yes | ❌ No |
| Resume | ✅ Yes | ❌ No |
| Business email | ✅ Yes | ❌ No |
| Blog article | ✅ Yes | ❌ No |
| Text message | ✅ Yes | ❌ No |
| Social media post | ✅ Yes | ❌ No |
Even in casual writing, the correct spelling is still occurring.
Synonyms and Alternatives
You do not always need to use occurring. Depending on your sentence, another word may sound more natural.
The most common alternative is happening. Other choices include taking place, developing, and arising, although they do not work in every sentence.
| Alternative | Works When | Does Not Work When |
|---|---|---|
| happening | You want simple, everyday English. | A more formal tone is needed. |
| taking place | You are describing an event. | You are describing every kind of process. |
| developing | Something is changing or forming. | You simply mean an event is happening. |
| arising | A problem or situation is appearing. | You mean a physical event is taking place. |
| unfolding | An event or story is developing. | You need a plain, direct statement. |
For example:
Problems are occurring.
Could become:
Problems are happening.
Both can work, but happening sounds more conversational.
Why Does Correct Spelling Matter?
Correct spelling improves clarity, professionalism, and trust.
A single missing letter rarely prevents someone from understanding a sentence. However, repeated spelling errors can make a document look rushed or careless.
This matters most when your writing represents you at school or work.
| Situation | Why Getting It Right Matters |
|---|---|
| Resume | Shows care with written details |
| Client email | Creates a professional impression |
| Published content | Builds reader trust |
| Social post | Makes your message easier to read |
A useful writing principle is:
Clear writing helps readers focus on your message instead of your mistakes.
That is especially true when the mistake is easy to avoid.
Clarity in Communication
If you write:
“The error is occuring again.”
Most readers will understand you.
But:
“The error is occurring again.”
looks polished and correct.
Professionalism
Spelling does not measure intelligence. Still, readers often use visible writing errors as clues about how carefully a document was prepared.
Digital Communication
Online writing moves quickly. That makes small spelling errors more likely. A quick review before sending can catch them.
Is Occurring Common in Formal Writing?
Yes. Occurring is useful in formal writing when you need to describe something that is happening or taking place.
For example:
Several changes are occurring within the organization.
You might see this kind of wording in reports, research writing, workplace documents, and news-style explanations.
Still, simple writing is often better when a shorter word works.
Compare:
Several problems are occurring.
with:
Several problems are happening.
Both are grammatical. The best choice depends on your audience and tone.
What Is the Difference Between Occur, Occurred, and Occurring?
The three forms mainly differ in tense and grammatical function.
| Word | Form | Example |
|---|---|---|
| occur | Base verb | Problems can occur. |
| occurred | Past tense/past participle | The problem occurred yesterday. |
| occurring | Present participle/gerund form | The problem is occurring now. |
This makes a useful spelling family:
occur → occurred → occurring
Seeing the words together is often more helpful than memorizing occurring by itself.
Does Occurring Need a Double R?
Yes. Occurring is spelled with two r letters.
The correct spelling is:
O-C-C-U-R-R-I-N-G
The incorrect form is:
O-C-C-U-R-I-N-G
Only one letter separates them, but the second spelling is wrong.
| Spelling | Number of R’s | Result |
|---|---|---|
| occurring | 2 | ✅ Correct |
| occuring | 1 | ❌ Incorrect |
When proofreading, look directly at the letters after u. If you see only one r, add the second one.
How To Check Occurring Before You Publish
If you are unsure about the spelling, use a three-step check.
Step 1: Find the Base Word
Ask what word you started with.
For occurring, the base word is occur.
Step 2: Add the Ending
Add -ing.
Step 3: Check the Final Consonant
The final r is doubled.
That gives:
occur + ing = occurring
This method is better than guessing from memory.
Is Occuring Ever Correct?
No. In standard US English, occuring is a spelling error, not a separate word with a different meaning.
If a spelling checker highlights it, replace it with occurring.
| Question | Answer |
|---|---|
| Is occurring correct? | Yes. |
| Is occuring correct? | No. |
| Do they have different meanings? | No. |
| Is the second r needed? | Yes. |
| What is the base word? | occur |
⚠️ A Final Look at the Most Common Errors
Here are several mistakes worth watching for:
- ❌ occuring
- ❌ occurrring
- ❌ occuring
- ❌ occuring now
- ❌ is occuring
- ❌ was occuring
The correct versions are:
- ✅ occurring
- ✅ occurring
- ✅ occurring
- ✅ occurring now
- ✅ is occurring
- ✅ was occurring
If you are proofreading a document, search for occuring. A search can quickly find every missing-r error.
💡 Test Tip: A Five-Second Spelling Test
When you see occurring, cover the ending -ing.
You should see:
occur
Now add -ing while keeping the spelling pattern:
occurring
If your version has only one r, it needs correction.
Try this mini-test:
| Your Thought | Correct Answer |
|---|---|
| occur + ing | occurring |
| occur + ed | occurred |
| occur + s | occurs |
| occur + ence | occurrence |
The base word gives you the clue.
Quick Recap Checklist
Use this checklist whenever you need to decide which spelling is correct.
| Question | If Yes → Use |
|---|---|
| Do you mean “happening”? | occurring |
| Are you adding -ing to occur? | occurring |
| Does your spelling have only one r? | Correct it to occurring |
| Are you writing for school or work? | occurring |
| Are you tempted to write “occuring”? | Change it to occurring |
Practice Examples
Try correcting these mentally:
- The event is occuring today.
- Several changes are occuring at once.
- The same error keeps occuring.
Correct answers:
- The event is occurring today. ✅
- Several changes are occurring at once. ✅
- The same error keeps occurring. ✅
The rule is the same every time.
FAQs About Occurring vs Occuring
Is occurring the correct spelling?
Yes. Occurring is the correct standard spelling. It is the -ing form of occur.
Why is occurring spelled with two r’s?
The final r in occur is doubled when the -ing ending is added. Therefore, occur + ing becomes occurring.
Is occuring ever an acceptable spelling?
No. Occuring is a misspelling of occurring in standard English.
How do you spell occurring correctly?
Spell it o-c-c-u-r-r-i-n-g. A helpful way to remember it is occur + -ing = occurring.
What does occurring mean?
Occurring means happening, taking place, or existing at a particular time or in a particular situation.
Is it occurring or occuring?
It is occurring. The version with two r letters is correct.
Is occurring a verb?
Yes. Occurring is the present participle of the verb occur. It can also function as a gerund in some sentences.
What is the past tense of occur?
The past tense is occurred, with two r letters.
What is the noun form of occur?
The noun form is occurrence. For example: “The event was a rare occurrence.”
What is an easy way to remember occurring vs occuring?
Remember this short pattern: occur → occurring → occurred. The word occur has two r letters, and occurring keeps the double r.
Conclusion
Occurring vs occuring has one clear answer: occurring is correct, while occuring is a misspelling. The reason is simple. The base word is occur, and when we add -ing, the final r is doubled.
So remember:
occur + ing = occurring
The same spelling family also gives us occurred and occurrence. Learning the whole group makes the correct spelling easier to remember.
When you are writing quickly, do not rely only on how the word looks or sounds. Go back to the base word. If the base is occur, keep the double r where the spelling rule requires it.
A one-letter check can make a big difference in a school assignment, work email, article, resume, or social post. ✨
When in doubt, remember: two R’s in occur, two R’s in occurring.

I am Alex Morgan, an English grammar and vocabulary writer passionate about making language learning simple and useful. I work at Grammiva, where I create clear educational content and practical English examples for learners.
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