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
as was thought
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "as was thought" is correct and usable in written English.
It can be used to indicate that something was believed or assumed in the past, often in a context where that belief is being referenced or contrasted with current understanding. Example: "The results of the experiment were surprising, as was thought by many researchers."
✓ Grammatically correct
News & Media
Science
Alternative expressions(4)
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
33 human-written examples
"Not as much snow fell as was thought," Ms. Blomley said.
News & Media
In experiments, he and colleagues found evidence that in dim light people's eyes do not focus on the horizon, as was thought at the time, but settle on a point much closer, often less than 10 feet away.
News & Media
A change in the molecular function of a protein by a change in the regulation of its gene means that gene duplication is not a prerequisite for functional innovation (Piatigorsky 1992; Piatigorsky and Wistow 1991; Hughes 1994, 1999, 2005), as was thought for many years (Ohno 1970; Kimura and Ota 1974; Taylor and Raes 2004).
Bariiev said activists would make sure humanitarian aid was delivered to Crimeans if it were absolutely needed, but only aid — not weapons, as was thought to be the case with so-called Russian aid deliveries last year.
News & Media
Africa's financial ostracism is not quite as acute as was thought.
News & Media
The relationship between carbon emissions and global warming is not as direct as was thought.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
27 human-written examples
Interindividual differences in metabolism of As are thought to account for some of the observed variation in susceptibility to As-related diseases (NRC 1999; Vahter 2000).
One important step in the pathogenesis of AS is thought to be an altered cell-matrix interaction via the podocyte collagen receptors.
Generally, RT-AS is thought of as a cutaneous disease.
Science
It felt as if he were not so much thinking as being thought.
News & Media
Despite a multitude of hindrances (such as being thought unladylike), women's basketball gradually secured a foothold.
Encyclopedias
Expert writing Tips
Best practice
When using "as was thought", ensure that the context clearly indicates who held the previous belief. For example, specify "as was thought by many scientists".
Common error
Avoid assuming that "as was thought" implies a universally held belief. Clarify the extent of the prior assumption to prevent misinterpretations. If it was a minority opinion, specify that.
Source & Trust
84%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "as was thought" functions as an adverbial phrase, modifying a clause to indicate a contrast between a past belief and present understanding. As Ludwig AI explains, it's grammatically correct. It introduces a sense of revision or correction to a prior assumption.
Frequent in
News & Media
34%
Science
34%
Encyclopedias
8%
Less common in
Wiki
6%
Formal & Business
0%
Academia
0%
Ludwig's WRAP-UP
The phrase "as was thought" is a versatile and grammatically sound way to introduce a contrast between past beliefs and current understanding. As Ludwig AI confirms, it's correct and suitable for various contexts, particularly in news, science, and encyclopedic content. To ensure clarity, specify who held the previous belief and avoid assuming universal acceptance. Alternatives such as "as previously believed" or "contrary to previous belief" can be used for similar effect.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
as previously believed
Emphasizes the change from a past belief to a current understanding.
as once believed
Highlights that the belief was held at some point in the past.
as it was assumed
Similar in meaning but emphasizes the act of assuming.
contrary to previous belief
Directly contrasts the current situation with a past belief.
against prior assumptions
Focuses on the falsification of earlier assumptions.
contrary to what was expected
Highlights the unexpected nature of the current situation.
differing from initial expectations
Formal phrasing emphasizing a divergence from prior expectations.
in contrast to the original idea
Focuses on the difference from the initial conceptualization.
reversing earlier perceptions
Indicates a complete change in understanding.
as people used to think
Colloquial phrasing that emphasizes a shift in popular opinion.
FAQs
How can I use "as was thought" in a sentence?
Use "as was thought" to introduce a contrast between a past belief and a current understanding. For example: "The climate is changing more rapidly than "as was thought" decades ago."
What's a good alternative to "as was thought"?
Alternatives include "as previously believed", "as once believed", or "contrary to previous belief", depending on the context.
Is it always necessary to specify who held the belief "as was thought"?
While not always mandatory, specifying who held the belief provides clarity and context. If it's a commonly held belief, it may be implied, but for niche or specific beliefs, it's best to be explicit.
What's the difference between "as was thought" and "as is thought"?
"As was thought" refers to a belief that was held in the past but may no longer be accurate, while "as is thought" refers to a current belief or assumption.
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
84%
Authority and reliability
4.1/5
Expert rating
Real-world application tested