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
it was thought
Grammar usage guide and real-world examplesUSAGE SUMMARY
"it was thought" is correct and usable in written English.
You can use it when you want to express an idea that somebody had at some time in the past. For example: It was thought that people who lived near the river had access to an abundance of food.
✓ Grammatically correct
News & Media
Science
Academia
Alternative expressions(20)
it was believed
it was considered
it was assumed
it was understood
people thought
they thought
the prevailing opinion was
the general consensus was
it seemed
it was revealed
it was hypothesized
it was advanced
it was put forward
it was remarked
the story leaked
reports indicated
it was seemed
however thought
therefore concluded
it was incorporated
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
56 human-written examples
It was thought that single cell C4 system could be faster to install in C3 plants.
Science
It was thought….
News & Media
Or so it was thought.
News & Media
It was thought too xenophobic.
News & Media
It was thought that the layer was composed of propylene.
Science
It was thought the killer was retired.
News & Media
Afterwards it was thought that 11..
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
4 human-written examples
Yes it was, thought Branca.
News & Media
At the time, it was thought that the functions of these circuits would soon be known.
Academia
Another time, it was thought to be cellulitis.
News & Media
It was thought to be a mean between two extremes.
Academia
Expert writing Tips
Best practice
Avoid overuse in formal writing; consider more active constructions like "researchers believed" or "experts concluded" for greater clarity and directness.
Common error
Ensure consistency in voice. Avoid shifting from the passive "it was thought" to an active construction without a clear subject. For instance, instead of "It was thought the experiment would fail, but scientists were surprised", use "It was thought the experiment would fail, but scientists were surprised by the results."
Source & Trust
88%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "it was thought" serves as a passive construction used to introduce a belief, idea, or assumption that existed at some point in the past. The phrase deemphasizes the actor (the one who thought) and focuses on the content of the thought. Ludwig AI confirms its correct and frequent usage.
Frequent in
News & Media
38%
Science
33%
Academia
24%
Less common in
Wiki
3%
Formal & Business
1%
Encyclopedias
1%
Ludwig's WRAP-UP
In summary, "it was thought" is a versatile phrase employed to introduce past beliefs or assumptions, often setting the stage for a contrasting viewpoint. As Ludwig AI confirms, it's grammatically correct and frequently used in written English. It commonly appears in news, scientific, and academic contexts, reflecting its neutrality in tone. When writing, be mindful of maintaining voice consistency and consider stronger, active constructions when appropriate for greater clarity. While numerous alternatives exist, the best choice depends on the specific nuance you wish to convey.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
it was believed
Synonymous, but emphasizes the act of believing.
it was considered
Implies a more formal or deliberate evaluation.
it was assumed
Suggests a presumption without concrete evidence.
it was understood
Indicates a common agreement or knowledge.
people thought
More direct and less formal than the original.
they thought
Similar to "people thought", but refers to a specific group.
the prevailing opinion was
Highlights widespread acceptance of an idea.
the general consensus was
Focuses on a collective agreement or understanding.
the assumption was
Highlights that something was presumed to be true.
it seemed
Implies an appearance or impression, rather than a firm belief.
FAQs
How can I use "it was thought" in a sentence?
Use "it was thought" to introduce a belief or understanding that existed in the past, often one that has since been challenged or revised. For example, "It was thought the world was flat until proven otherwise".
What are some alternatives to "it was thought"?
Alternatives include "it was believed", "it was considered", or "it was assumed", depending on the nuance you want to convey. Each suggests a slightly different level of certainty or evidence.
Is "it was thought" formal or informal?
"It was thought" is generally neutral in tone. While suitable for many contexts, more formal writing may benefit from a more direct construction, such as "researchers believed".
What's the difference between "it was thought" and "it is thought"?
"It was thought" refers to a past belief, while "it is thought" indicates a current belief or understanding. The tense shift is crucial for conveying the correct timeframe.
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
4.5/5
Expert rating
Real-world application tested