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
it has occurred previously
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "it has occurred previously" is correct and usable in written English.
You can use it to refer to an event or situation that has happened before in a specific context. Example: "This issue has been raised multiple times in our meetings; it has occurred previously and needs to be addressed."
✓ Grammatically correct
Science
News & Media
Formal & Business
Alternative expressions(3)
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified similar examples from authoritative sources
Similar Expressions
60 human-written examples
"It's a trend that has occurred previously," Parseghian said.
News & Media
Ramping up of contingency plans for a crisis on China's border with the DPRK has occurred previously when Beijing's analysts have felt collapse may be imminent.
News & Media
The principles guiding the use of MR imaging in pregnancy are to avoid any potential harm even where there are no firm data indicating this has occurred previously.
Science
Thus, the assumption leads to the conclusion that the condition probability at the point of t+1 is obtainable through an expression X (t+1) = x j, if the r- th state transition has occurred previously.
This incident has occurred previously during Iran's 2005 elections when the reformist candidate Mustafa Moin was reinstated and ended up placing fifth in the elections.
News & Media
These "wraps" usually finish off the book's plot points but in this case the ending is silly and minimizes all that has occurred previously.
News & Media
An emerging zoonoses is a zoonosis that is newly recognized or newly evolved, or that has occurred previously but shows an increase in incidence or expansion in geographic, host, or vector range [8].
Science
In the late 1970s, however, new research data indicated that similar expansions, or blooms, had occurred previously, followed by periods of decline.
Encyclopedias
The new satellite lesion did not form a wreath-like infiltrate as had occurred previously.
These small patches were introduced to reflect moderate earthquakes that had occurred previously in this region.
Science
There were a few soil deposits within the study area caused by small landslides, which had occurred previously as a result of post-harvest erosion events.
Expert writing Tips
Best practice
When using "it has occurred previously", ensure the context is formal or when referring to documented events. In less formal situations, consider using simpler alternatives like "it happened before".
Common error
Avoid using "it has occurred previously" in casual conversation or informal writing. This phrase can sound overly formal or stilted in contexts where simpler language is more appropriate.
Source & Trust
60%
Authority and reliability
3.8/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "it has occurred previously" functions as a statement indicating that an event or situation is not novel; rather, it has taken place at some earlier point in time. As indicated by Ludwig, the phrase is grammatically correct and usable in written English.
Frequent in
Science
0%
News & Media
0%
Formal & Business
0%
Less common in
Science
0%
News & Media
0%
Formal & Business
0%
Ludwig's WRAP-UP
In summary, the phrase "it has occurred previously" is a grammatically correct expression used to indicate that something has happened before. According to Ludwig, it's a valid phrase suitable for written English. Its formality lends itself more to academic, scientific, or professional contexts. While simpler alternatives might be preferred in informal settings, "it has occurred previously" serves to provide context by referencing established precedents. Although no exact examples were found in the provided data, the analysis suggests that this phrase functions to draw on past events to inform present understanding. Ludwig indicates its general correctness and usability.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
it happened before
This is a more concise and informal way of saying something has occurred previously.
it occurred earlier
A more succinct way of saying that something took place at a prior time.
it has happened in the past
This alternative emphasizes the temporal aspect of the event having taken place at an earlier time.
it previously took place
This version uses a slightly more formal tone and emphasizes the action of taking place.
the same thing happened before
Directly indicates the repetition of an identical event.
it was previously experienced
Focuses on the aspect of experiencing the event, suitable when the event involves someone's personal experience.
this has precedent
This option is suitable when you want to indicate that there's an established pattern or example.
there is a prior instance
This phrase emphasizes that there's a previous case or occurrence of the event.
it is not the first time
Highlights the fact that the event or situation is recurring.
it has a history
This suggests that there's a background or past related to the subject.
FAQs
What does "it has occurred previously" mean?
The phrase "it has occurred previously" means that something has happened or taken place at an earlier time. It indicates that the event or situation is not new or unprecedented.
What are some alternatives to "it has occurred previously"?
You can use alternatives like "it happened before", "it occurred earlier", or "it has happened in the past" depending on the context.
Is "it has occurred previously" formal or informal?
The phrase "it has occurred previously" is generally considered formal. In informal contexts, simpler alternatives are often preferred.
How can I use "it has occurred previously" in a sentence?
Example: "This issue "it has occurred previously" and needs to be addressed promptly."
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
60%
Authority and reliability
3.8/5
Expert rating
Real-world application tested