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
have been thought
Grammar usage guide and real-world examplesUSAGE SUMMARY
"have been thought" is correct and usable in written English.
You can use it to indicate something was considered in the past, but is no longer believed. For example, "His behavior at the party was thought to be inappropriate, but later it was discovered that his actions had been misinterpreted."
✓ Grammatically correct
News & Media
Science
Academia
Alternative expressions(5)
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
Most thoughts have been thought before.
News & Media
The changes have been thought through.
News & Media
That had to have been thought through very carefully.
News & Media
Both have been thought of as stubborn and prickly.
News & Media
This could scarcely have been thought possible; but it worked.
News & Media
General manager and boss have been thought of synonymously.
News & Media
That does not seem to have been thought through.
News & Media
Could they then have been thought of as consenting adults?
News & Media
Everything will have been thought about, except thought itself.
News & Media
"Traditionally, small vehicles have been thought of as being basic.
News & Media
In the past, antidepressants have been thought to possess proconvulsant properties.
Science
Expert writing Tips
Best practice
When using "have been thought," ensure that the subject clearly indicates who held the belief or did the thinking. This improves clarity and avoids ambiguity.
Common error
While "have been thought" is grammatically correct, overuse of passive voice can make your writing sound indirect and less engaging. Consider active voice alternatives when appropriate to enhance clarity and impact.
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "have been thought" functions as a passive construction in the past perfect tense. It indicates that an idea, concept, or object was previously considered or believed to be a certain way. The phrase is widely used to denote outdated or evolving perspectives, as demonstrated by Ludwig's examples and confirmed by Ludwig AI.
Frequent in
Science
33%
News & Media
31%
Wiki
5%
Less common in
Formal & Business
2%
Encyclopedias
0%
Academia
29%
Ludwig's WRAP-UP
In summary, "have been thought" is a grammatically sound and frequently used phrase, as confirmed by Ludwig, serving to indicate past beliefs or considerations that may or may not align with current understanding. Predominantly found in science, news media, and academic contexts, it effectively communicates historical perspectives and contrasts evolving knowledge. While versatile, mindful use of passive voice and clear subject identification are crucial for effective communication.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
have been regarded as
Adds "as" to specify what something has been considered to be.
were considered
Focuses on the action of considering, rather than the state of being thought about.
have been viewed as
Suggests a particular perspective or opinion on something.
were believed
Emphasizes the belief aspect, suggesting acceptance or faith in an idea.
have been perceived as
Highlights the subjective experience of how something is sensed or understood.
were deemed
Implies a formal judgment or assessment regarding something.
were regarded
Highlights the perspective or viewpoint from which something is viewed.
have been conceived as
Emphasizes the initial formation or creation of an idea.
were understood
Focuses on comprehension and knowledge of something.
have been imagined as
Focuses on the act of visualizing or fantasizing about something.
FAQs
How do I use "have been thought" in a sentence?
Use "have been thought" to express past beliefs or considerations. For instance, "The Earth was once "thought" to be flat."
What are some alternatives to "have been thought"?
You can use phrases like "were considered", "were believed", or "were deemed" depending on the context.
Is "have been thought" formal or informal?
"Have been thought" is suitable for both formal and informal contexts, though it's more common in academic and journalistic writing.
What's the difference between "have been thought" and "had been thought"?
"Have been thought" refers to a state or belief that existed up to the present, while "had been thought" refers to a state or belief that existed in the past before another event.
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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
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested