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
this could have
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "this could have" is correct and usable in written English.
It is typically used to express a possibility or hypothetical situation regarding something that might have happened in the past. Example: "This could have been a great opportunity for us if we had acted sooner."
✓ Grammatically correct
News & Media
Science
Alternative expressions(19)
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
"This could have happened anywhere".
News & Media
"This could have been me.
News & Media
This could have enormous implications.
News & Media
"This could have been terrible".
News & Media
This could have been predicted.
News & Media
This could have been avoided".
News & Media
This could have consequences for the coalition.
News & Media
This could have been an awkward moment.
News & Media
"This could have been a bad fall".
News & Media
This could have far-reaching effects".
News & Media
This could have been a gripping story.
News & Media
Expert writing Tips
Best practice
Use "this could have" to express hypothetical scenarios or missed opportunities in the past. Ensure the context clearly indicates the unrealized potential or avoided outcome.
Common error
Avoid using "this could of" as it's a common misspelling. The correct form is always "this could have" or the contraction "this could've".
Source & Trust
88%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "this could have" functions as a modal construction expressing possibility or potential in the past. It indicates that something was possible but did not actually occur. As Ludwig AI confirms, the phrase is grammatically sound and commonly used.
Frequent in
News & Media
40%
Science
30%
Formal & Business
10%
Less common in
Wiki
7%
Encyclopedias
5%
Reference
3%
Ludwig's WRAP-UP
In summary, "this could have" is a versatile modal phrase used to express past possibilities or unrealized potentials. According to Ludwig AI, it's grammatically correct and widely accepted. It's commonly found in news articles, scientific reports, and general communication, conveying a sense of hypothetical scenarios or missed opportunities. Remember to avoid the common misspelling "this could of". Alternatives include "this might have" and "this may have", depending on the desired nuance.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
this might have
Replaces "could" with "might", indicating a slightly lower degree of possibility.
this may have
Substitutes "could" with "may", conveying a similar level of possibility as "might".
this could've
This is a contraction of 'could have', making it more informal.
it's possible that this happened
Rephrases the idea using a more explicit statement of possibility.
it is conceivable that this occurred
Uses more formal vocabulary to express the possibility of something happening.
this conceivably happened
Emphasizes that something is possible or imaginable.
this was potentially the case
Indicates that something had the possibility of being true or real.
perhaps this was the situation
Offers a more speculative way of suggesting a possible past scenario.
it's within the realm of possibility
Emphasizes that something is possible, even if unlikely.
this wasn't outside the bounds of possibility
Highlights that the event was within the limits of possibility.
FAQs
How can I use "this could have" in a sentence?
Use "this could have" to describe a past possibility that did not occur. For example, "This could have been a disaster, but luckily, we were prepared."
What's the difference between "this could have" and "this should have"?
"This could have" indicates a possibility, while "this should have" suggests an expectation or obligation. For example, "This could have worked if you had tried harder" versus "This should have been completed yesterday."
What can I say instead of "this could have"?
You can use alternatives like "this might have", "this may have", or "it's possible that this happened depending on the context.
Is "this could of" grammatically correct?
No, "this could of" is incorrect. The correct form is "this could have" or the contraction "this could've".
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
88%
Authority and reliability
4.6/5
Expert rating
Real-world application tested