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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
may have been
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "may have been" is correct and can be used in written English.
It is used when speaking or writing about something that may have happened or been true in the past, but you cannot be certain. For example: "The thief may have been wearing a black hoodie, but no one saw them clearly."
✓ Grammatically correct
News & Media
Alternative expressions(20)
could have been
might have been
possibly was
might be
perhaps it was
potentially was
conceivably was
it is possible that it was
may have participated
may have believed
may have succeeded
may have spoken
may have misspoke
may have fisted
may have used
may has led to
may have worked
might have led to
could be attributed to
possibly brought about
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
It may have been.
News & Media
There may have been… DEPT.
News & Media
She may have been praying.
News & Media
"It may have been fantasy.
News & Media
She may have been thirteen.
News & Media
That may have been foolish.
News & Media
(Questions may have been edited).
News & Media
(Bias may have been showing).
News & Media
That may have been unnecessary.
News & Media
"I may have been wrong".
News & Media
It may have been indigestion.
News & Media
Expert writing Tips
Best practice
Use "may have been" to express uncertainty about a past event or state. It's suitable when you want to indicate a possibility without making a definitive statement.
Common error
While "may have been" is acceptable, overuse can make your writing sound hesitant. In formal contexts, consider stronger verbs or rephrasing to convey more confidence if the context allows.
Source & Trust
91%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "may have been" functions as an epistemic modal, indicating a degree of uncertainty or possibility regarding a past event or state. Ludwig provides numerous examples where this phrase is used to express conjecture or speculation.
Frequent in
News & Media
98%
Formal & Business
1%
Science
1%
Less common in
Academia
0%
Encyclopedias
0%
Wiki
0%
Ludwig's WRAP-UP
In summary, the phrase "may have been" is a common and grammatically sound way to express uncertainty or possibility about a past event, as affirmed by Ludwig AI. Predominantly used in neutral contexts such as news and media, it allows for speculation without definitive assertion. While interchangeable with alternatives like "could have been" or "might have been", it is crucial to avoid overuse in formal writing to maintain a confident tone. Ludwig's extensive examples underscore the phrase's versatility and appropriateness in various communicative scenarios.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
could have been
Expresses a possibility in the past, similar to "may have been" but sometimes implies a slightly higher degree of likelihood.
might have been
Indicates a possibility that is similar to "may have been", often used interchangeably but sometimes suggests a slightly lower probability.
perhaps it was
Offers a simple, straightforward alternative, generally interchangeable with "may have been" but less formal.
possibly was
Directly states a past possibility; less formal than "may have been" and often used in more casual contexts.
potentially was
Highlights the potential nature of something in the past, similar to "may have been" but emphasizes the potential aspect.
conceivably was
Suggests something was within the realm of possibility, offering a slightly more formal tone than "may have been".
it is possible that it was
An expanded version of "may have been" adding a degree of emphasis.
it's plausible that it was
Emphasizes the believability or credibility of a past situation, akin to "may have been" but with a focus on plausibility.
there is a chance it was
Focuses on the element of chance or probability in the past, similar to "may have been" but with a specific emphasis on chance.
it could be the case that it was
Presents a hypothetical scenario, sharing the sense of "may have been" but framed as a possible situation.
FAQs
How can I use "may have been" in a sentence?
"May have been" is used to express a possibility or uncertainty about a past event. For example, "The delay "may have been" caused by bad weather."
What are some alternatives to "may have been"?
Alternatives include "could have been", "might have been", or "possibly was". The choice depends on the specific nuance you wish to convey.
Is there a difference between "may have been" and "might have been"?
While often interchangeable, "may have been" and "might have been" generally express similar degrees of possibility. Some might perceive "might" as indicating a slightly lower probability.
Which is correct, "may have been" or "might be"?
"May have been" refers to a past event or state, while "might be" refers to a present or future possibility. The correct choice depends on the time frame you are referencing.
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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
91%
Authority and reliability
4.6/5
Expert rating
Real-world application tested