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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
could have occurred
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "could have occurred" is correct and usable in written English.
It is typically used to express a possibility or hypothetical situation in the past that did not actually happen. Example: "The accident could have occurred if the driver had not been paying attention."
✓ Grammatically correct
News & Media
Science
Encyclopedias
Alternative expressions(20)
might have stopped
could have toured
could have characterized
might have implemented
might have occurred
might have advanced
could have aroused
could have encountered
could have progressed
might have transpired
may have transpired
could have emerged
may have taken place
might have generated
might have anticipated
might have investigated
could occur
conceivably happened
could have participated
could have happened
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
"Things could have occurred," she said.
News & Media
But depressurization could have occurred without breakup, experts said.
News & Media
The injury could have occurred when my mother had Rew.
News & Media
There are just two ways that could have occurred.
News & Media
The high sequence variability suggests that somatic diversification of these nonself recognition molecules could have occurred.
However, the compression stresses implied that creep deformation could have occurred without inducing discernible creep damage.
She noted, though, that the findings could have occurred by chance.
News & Media
He said that the interbreeding could have occurred anywhere in southern Asia.
News & Media
There was a lack of preparedness around a scenario that manifestly could have occurred.
News & Media
Mr. Scheider adds helpfully that such a "gigantic eruption could have occurred".
News & Media
He did not deny, however, that such a conversation could have occurred.
News & Media
Expert writing Tips
Best practice
Use "could have occurred" to express a possibility in the past that did not necessarily happen. It's suitable when discussing potential scenarios or explaining how something might have unfolded differently.
Common error
Avoid using "could have occurred" when a more definitive explanation is required. If you have evidence or strong reasons to believe something did happen, opt for stronger verbs like "happened", "resulted", or "was caused by" instead of hedging with "could have occurred".
Source & Trust
82%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "could have occurred" functions as a modal verb construction expressing a past possibility. It indicates that an event was possible in the past, but it's not confirmed whether it actually happened. As Ludwig AI shows, the phrase is widely used across various contexts to suggest potential scenarios.
Frequent in
News & Media
52%
Science
38%
Encyclopedias
5%
Less common in
Wiki
3%
Academia
2%
Formal & Business
0%
Ludwig's WRAP-UP
In summary, "could have occurred" is a versatile phrase used to express past possibilities or hypothetical situations. Ludwig AI confirms its grammatical correctness and widespread use across various domains. It's crucial to use this phrase when discussing potential events that were possible but not confirmed. While alternatives exist, such as "might have happened" or "may have taken place", "could have occurred" provides a balanced and widely accepted way to speculate about past events without making definitive claims.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
might have happened
Replaces "could" with "might", suggesting a slightly lower probability.
may have taken place
Substitutes "could" with "may", also indicating a possibility, and replaces "occurred" with "taken place", which is slightly more formal.
potentially happened
Uses "potentially" to emphasize the possibility, and "happened" instead of "occurred" for simplicity.
conceivably arose
Replaces "could have" with "conceivably" and "occurred" with "arose", indicating a possible origin or emergence.
possibly transpired
Employs "possibly" to express likelihood and "transpired" to denote that an event has happened, often unexpectedly.
it's plausible that it happened
Rephrases the idea to emphasize plausibility using a longer, more descriptive structure.
it is not impossible for it to have happened
Expresses possibility by negating impossibility, adding a layer of complexity to the sentence.
there's a chance it happened
Indicates a possibility using a more informal and conversational tone.
it's within the realm of possibility
Suggests the event fits within the range of possible outcomes.
it's a hypothetical possibility
Emphasizes that the event is a theoretical or conditional possibility.
FAQs
How can I use "could have occurred" in a sentence?
Use "could have occurred" to describe something that was possible in the past but not certain. For example, "The accident "could have occurred" if the driver hadn't reacted quickly."
What can I say instead of "could have occurred"?
You can use alternatives like "might have happened", "may have taken place", or "potentially happened" depending on the context.
Which is correct, "could have occurred" or "could occur"?
"Could have occurred" refers to a past possibility, while "could occur" refers to a present or future possibility. For example, "The error "could have occurred" during the data entry process," versus "A similar error "could occur" again if we don't improve our procedures."
What's the difference between "could have occurred" and "would have occurred"?
"Could have occurred" indicates a possibility that something might have happened, but didn't necessarily. "Would have occurred" suggests a certainty given a specific condition. For example, "The delay "could have occurred" due to unforeseen circumstances," versus "The delay "would have occurred" if the flight had been on time."
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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
82%
Authority and reliability
4.5/5
Expert rating
Real-world application tested