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
thought not to
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "thought not to" is correct and can be used in written English.
It is mainly used to indicate a negative opinion about something. For example you can say "The police believed him to be responsible, but his friends thought not to be the case."
✓ Grammatically correct
News & Media
Science
Academia
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
60 human-written examples
He was lucky, he thought, not to be that dog.
News & Media
He is thought not to have left Iran since 1989.
News & Media
"It was thought not to be a good idea.
News & Media
His colleague is thought not to be seriously injured.
News & Media
All public key algorithms are thought not to be solvable in polynomial time.
Academia
The old, sapping heaviness of Wembley's turf is thought not to be a problem this weekend.
News & Media
England's total population at the time is thought not to have exceeded 3m people.
News & Media
A being that necessarily exists cannot coherently be thought not to exist.
Encyclopedias
Antibody responses are generally thought not to play a role in tumor protection.
Science & Research
Swine are thought not to be susceptible to mad cow disease.
News & Media
Moreover, sugar-alcohol catalysts are thought not to cause polymer coloration because TDDFT calculation gave no significant absorbance in visible region for them.
Science
Expert writing Tips
Best practice
Use "thought not to" to express a contrast between a common belief and an alternative perspective. For clarity, follow it with a specific reason or evidence that supports the differing viewpoint.
Common error
Avoid using "thought not to" when expressing a positive belief or expectation. This phrase inherently carries a negative connotation, so using it in an affirmative context can create confusion. Instead, use "thought to" or "believed to" for positive statements.
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "thought not to" functions as a modifier within a sentence, typically expressing a contrary opinion or a lack of expectation regarding a particular subject. Ludwig AI examples show it effectively conveys a deviation from a generally held belief or initial assessment.
Frequent in
News & Media
42%
Science
37%
Academia
14%
Less common in
Encyclopedias
2%
Wiki
2%
Formal & Business
1%
Ludwig's WRAP-UP
In summary, "thought not to" is a versatile phrase that expresses dissent or a negative expectation. As Ludwig AI confirms, it is grammatically sound and prevalent in various contexts, particularly in news, scientific, and academic writing. While alternatives like "believed not to" or "deemed not to" exist, "thought not to" provides a clear and direct way to convey a contrasting perspective. When using the phrase, ensure it accurately reflects a negative belief and is not mistakenly used in an affirmative context. Remember to provide context or reasoning to strengthen the impact of your statement.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
believed not to
Replaces "thought" with "believed", maintaining a similar connotation of opinion or assessment.
not believed to
Similar to "believed not to", but with a slightly different word order.
considered not to
Substitutes "thought" with "considered", emphasizing a more formal evaluation.
deemed not to
Uses "deemed" instead of "thought", suggesting a judgment or official assessment.
not considered to
Mirrors "considered not to" with a reordered structure, still implying a formal evaluation.
wasn't thought to
Expresses the idea in a passive voice, emphasizing the lack of general consensus.
not deemed to
Reflects "deemed not to" by restructuring the sentence, maintaining the sense of official judgment.
presumed not to
Replaces "thought" with "presumed", suggesting an assumption made without concrete evidence.
assumed not to
Similar to "presumed not to", implying a belief based on less than definitive proof.
was not expected to
Indicates a lack of anticipation or expectation, diverging slightly from the opinion-based nature of "thought".
FAQs
How can I use "thought not to" in a sentence?
Use "thought not to" to express a contrasting opinion or a lack of expectation. For example: "The initial plan was promising, but the team "thought not to" proceed due to budget constraints."
What are some alternatives to "thought not to"?
Depending on the context, alternatives include "believed not to", "considered not to", or "deemed not to". Each carries a slightly different nuance regarding the basis and formality of the opinion.
Is it correct to say "was thought to not" instead of "thought not to"?
While "was thought to not" isn't grammatically incorrect, ""thought not to"" is more concise and commonly used. The latter is generally preferred for its directness.
How does the meaning of "thought not to" differ from "thought to"?
"Thought not to" implies a disbelief or a negative expectation, while "thought to" suggests a belief or positive expectation. The presence of "not" reverses the sentiment entirely.
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
4.5/5
Expert rating
Real-world application tested