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
were believed to
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "were believed to" is correct and usable in written English.
This phrase typically appears in the perfect tense and is used when talking about something that might have happened in the past. For example, "The ancient Greeks were believed to have worshipped several gods."
✓ Grammatically correct
News & Media
Science
Wiki
Alternative expressions(16)
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
58 human-written examples
All were believed to have drowned.
News & Media
All were believed to be migrants.
News & Media
None were believed to be American.
News & Media
None were believed to have drowned.
News & Media
The two men were believed to be close to destitute.
News & Media
In 1986, two herds were believed to be infected.
News & Media
All were believed to be conspiring with the Colombians.
News & Media
Some species were believed to be endangered, others threatened.
News & Media
Most of them were believed to be firefighters.
News & Media
None were believed to have life-threatening injuries.
News & Media
The others were believed to be those of airmen.
News & Media
Expert writing Tips
Best practice
When using "were believed to", ensure the source of the belief is clear to avoid ambiguity. For instance, specify who held the belief if it's not a universally accepted fact.
Common error
Avoid using "were believed to" when the belief is actually a confirmed fact. This phrase is most effective when conveying uncertainty or a past perspective that may no longer be accurate.
Source & Trust
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "were believed to" functions as a passive construction indicating a state of previously held belief. This implies that the subject of the sentence was the object of someone's or a group's belief. Ludwig examples demonstrate its use in historical contexts and uncertain scenarios.
Frequent in
News & Media
48%
Science
26%
Wiki
9%
Less common in
Formal & Business
4%
Reference
0%
Social Media
0%
Ludwig's WRAP-UP
The analysis shows that "were believed to" is a versatile and commonly used phrase. It serves to express past beliefs, often those that are no longer definitively true. It's considered grammatically correct and appears across a range of sources, particularly in news, science, and general knowledge contexts. As confirmed by Ludwig, this phrase is helpful for indicating uncertainty or conveying historical perspectives. Remember to clarify the source of the belief for improved clarity and avoid using it when referring to established facts.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
were thought to be
Replaces "believed" with a direct synonym, focusing on the act of thinking rather than believing.
were considered to be
Emphasizes a more formal assessment or judgment.
were reputed to be
Suggests the belief is based on hearsay or widespread opinion, possibly without direct evidence.
were understood to be
Indicates a shared understanding or common knowledge about something.
were presumed to be
Highlights an assumption made in the absence of concrete proof.
were assumed to be
Similar to 'presumed,' but can imply a less formal or rigorous basis for the assumption.
were deemed to be
Suggests an official or authoritative judgment has been made.
were held to be
Implies a strong conviction or adherence to a belief.
were rumored to be
Indicates the information is circulating as a rumor and may not be reliable.
were speculated to be
Highlights that the information is based on conjecture or guesswork.
FAQs
How can I use "were believed to" in a sentence?
You can use "were believed to" to indicate a past belief that may or may not be true now. For example, "The canals of Mars "were believed to be" constructed by an ancient civilization".
What are some alternatives to "were believed to"?
Some alternatives to "were believed to" include "were thought to be", "were considered to be", or "were reputed to be", depending on the nuance you wish to convey.
Which is correct, "were believed to be" or "was believed to be"?
"Were believed to be" is used with plural subjects, while "was believed to be" is used with singular subjects. For example, "The rumors "were believed to be" false" versus "The rumor "was believed to be" false".
What is the difference between "were believed to" and "are believed to"?
"Were believed to" indicates a belief held in the past, while "are believed to" indicates a belief that is currently held. The choice depends on whether the belief is still current or is historical.
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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
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested