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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
ill knowledge
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "ill knowledge" is not commonly used in written English and may be considered incorrect.
It could be interpreted as referring to knowledge that is harmful or incorrect, but it is not a standard expression. Example: "His ill knowledge of the subject led to many misunderstandings during the discussion."
⚠ May contain grammatical issues
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 similar examples from authoritative sources
Similar Expressions
60 human-written examples
If they're hired away or fall ill, their knowledge could be lost.
News & Media
When a child falls ill, the knowledge of his/her caretaker regarding the natural history of the disease and the caretaker's ability to seek appropriate care for the child play a vital role in reducing the morbidity and mortality from that illness.
Or you could do nothing but nurture your ill-gained knowledge in the secret chambers of your envious heart.
News & Media
One challenge is how the system deals with incomplete ill-defined knowledge while the solution can be achieved on the fly.
Science
From previous projects we have learned that a user-centered approach is mandatory in complex and ill-defined knowledge domains such as internal medicine.
Learning in complex and ill-structured knowledge domains requires accommodation of multiple perspectives embedded in authentic activities and the reconciliation of those perspectives with personal beliefs resulting in conceptual change.
Science
Even though asylum seekers are considered vulnerable to mental ill-health, knowledge of their suicidal behaviour is limited.
Science
One recent morning, while leading trainees through the hospital's wards, Dr. Heineken faced the delicate task of every teacher of medicine — using the gravely ill to impart knowledge.
News & Media
3 5 11 12 Whereas various studies examined determinants of mental ill health, profound knowledge of determinants of PMH is lacking.
Science
The consequence is that many schoolchildren will end up ill-informed, their knowledge of science beyond the classroom likely to be limited to either science fiction films and books or programmes they have seen on TV.
News & Media
They still live off their brawn rather than their brain, and they may be able to live happily with organisational structures that are, as Mr Bryan puts it, "retrofitted with ad hoc and matrix overlays", and that are ill-suited for knowledge workers.
News & Media
Expert writing Tips
Best practice
Avoid using the phrase "ill knowledge" as it's not a standard or widely accepted expression in English. Instead, opt for more precise and commonly understood alternatives such as "misguided understanding" or "inaccurate information".
Common error
Don't confuse "ill knowledge" with established phrases like "ill-gotten gains" or "ill-advised actions". While "ill-" can indicate negativity, "ill knowledge" doesn't carry a clear or conventional meaning and should be avoided to prevent confusion.
Source & Trust
60%
Authority and reliability
2/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "ill knowledge" functions as a noun phrase where "ill" modifies "knowledge". However, based on Ludwig AI, this construction is uncommon and potentially grammatically questionable due to its lack of conventional usage.
Frequent in
Science
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News & Media
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Formal & Business
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Less common in
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News & Media
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Ludwig's WRAP-UP
In summary, the phrase "ill knowledge" is not a standard or recommended expression in English. As Ludwig AI suggests, its meaning is ambiguous and can be better conveyed using more precise alternatives like "misguided understanding", "false information", or "inaccurate awareness". Because of its non-standard nature, it is best to avoid using "ill knowledge" in both formal and informal writing to ensure clarity and avoid potential misinterpretations. Opting for more conventional phrases enhances the credibility and understandability of your writing.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
Misguided understanding
Replaces "knowledge" with "understanding" and "ill" with "misguided", emphasizing the flawed nature of the comprehension.
False information
Substitutes "knowledge" with "information" and "ill" with "false", highlighting the inaccuracy of the data.
Inaccurate awareness
Uses "awareness" instead of "knowledge" and "inaccurate" instead of "ill", focusing on the lack of precision in perception.
Deficient expertise
Replaces "knowledge" with "expertise" and "ill" with "deficient", stressing a lack of necessary skill or proficiency.
Flawed comprehension
Uses "comprehension" instead of "knowledge" and "flawed" instead of "ill", underscoring fundamental errors in understanding.
Corrupted intellect
Replaces "knowledge" with "intellect" and "ill" with "corrupted", which implies that information or knowledge is corrupted or tainted.
Unsound judgement
Substitutes "knowledge" with "judgement" and "ill" with "unsound", signifying poor decision-making due to faulty information.
Faulty insight
Employs "insight" instead of "knowledge" and "faulty" instead of "ill", indicating defective perception or understanding.
Unreliable data
Replaces knowledge with data and 'ill' with 'unreliable', highlighting its untrustworthy character.
Dubious wisdom
Substitutes "knowledge" with "wisdom" and "ill" with "dubious", casting doubt on the value or correctness of the information.
FAQs
What does "ill knowledge" mean?
The phrase "ill knowledge" is not a standard English expression. It might be interpreted as incorrect or harmful knowledge, but it's better to use more specific alternatives like "misinformation" or "flawed understanding".
What are some alternatives to "ill knowledge"?
Instead of "ill knowledge", consider using phrases such as "misguided understanding", "false information", or "inaccurate awareness" to convey the intended meaning more clearly.
Is it grammatically correct to say "ill knowledge"?
While not strictly ungrammatical, "ill knowledge" is not a commonly used or recognized phrase in English. It is advisable to use more established and precise terms to avoid ambiguity.
How can I use alternatives to "ill knowledge" in a sentence?
Instead of "His ill knowledge of the subject led to misunderstandings", try "His "misguided understanding" of the subject led to misunderstandings" or "His "false information" about the subject led to misunderstandings".
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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
60%
Authority and reliability
2/5
Expert rating
Real-world application tested