Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
that occurred
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "that occurred" is correct and usable in written English.
You can use it to refer to an event or situation that has taken place in the past. Example: "The incident that occurred last week has raised several concerns among the community."
✓ Grammatically correct
News & Media
Academia
Alternative expressions(18)
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
60 human-written examples
"And that occurred".
News & Media
"These are things that occurred".
News & Media
But I don't know everything that occurred".
News & Media
And that's not the situation that occurred".
News & Media
Little of that occurred with O'Rourke.
News & Media
I passed along the suggestions that occurred to me.
News & Media
First of all, I loved the misinterpretation that occurred early.
News & Media
A classic case of that occurred this week.
News & Media
So the question that occurred to me was this.
News & Media
What was the very first thing that occurred to you?
News & Media
He tells about an event that occurred in 1957.
News & Media
Expert writing Tips
Best practice
When writing formal texts, use "that occurred" instead of "that happened" for a more professional tone.
Common error
Avoid using "occurred" when referring to present or future events. "Occurred" strictly denotes past actions. Instead, use words like 'happens', 'arises', or 'will occur' depending on the intended tense.
Source & Trust
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "that occurred" functions as a relative clause, modifying a noun by providing additional information about it. It specifies which particular event or situation is being referred to. Ludwig confirms that this phrase is grammatically correct and widely used.
Frequent in
News & Media
73%
Academia
12%
Science
5%
Less common in
Formal & Business
5%
Encyclopedias
0%
Wiki
0%
Ludwig's WRAP-UP
In summary, the phrase "that occurred" is a grammatically sound and frequently used relative clause for referring to past events. Ludwig confirms it's usability. Predominantly found in news and media, it serves to provide specific details or clarification. While generally neutral, it leans towards a slightly more formal register. For alternative phrasing, consider "that happened" for less formal contexts or "that transpired" for a more elevated tone. Remember to use "that occurred" exclusively for past events and avoid it in present or future contexts. The high expert rating reflects its grammatical correctness, source authority, and consistent usage.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
that happened
Replaces "occurred" with a simpler, more common synonym.
that took place
Offers a slightly more formal alternative to "happened".
that transpired
Provides a more formal and sometimes dramatic alternative.
that came about
Suggests a sense of how something developed or emerged.
that ensued
Implies a sequence of events following an initial action.
that materialised
Highlights the actualization or realization of something.
that presented itself
Emphasizes the appearance or occurrence of an opportunity or problem.
that unfolded
Suggests a gradual revelation or development of events.
that came to pass
A more literary or old-fashioned way of saying "happened".
that played out
Describes how an event or situation progressed and concluded.
FAQs
How can I use "that occurred" in a sentence?
Use "that occurred" to refer to an event or incident that has already taken place. For example: "The error "that occurred" during the experiment needs to be investigated".
What are some alternatives to "that occurred"?
Alternatives to "that occurred" include "that happened", "that took place", or "that transpired". The choice depends on the level of formality and the specific context.
Is there a difference between "that occurred" and "that happened"?
While both phrases are similar, "that occurred" is generally considered more formal than "that happened". Use "that occurred" in professional or academic writing and "that happened" in more casual contexts.
When should I use "that occurred" instead of "which occurred"?
"That occurred" is used in restrictive clauses, which are essential to the meaning of the sentence. "Which occurred" is used in non-restrictive clauses, which add extra information but are not essential. For example: "The incident "that occurred" led to new safety protocols" (essential) vs. "The incident, "which occurred" last week, is still under investigation" (extra information).
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested