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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
unability
Grammar usage guide and real-world examplesUSAGE SUMMARY
The part of the phrase "unability" is not correct and not usable in written English.
The correct term is "inability," which refers to the state of being unable to do something. Example: "Her inability to meet the deadline caused significant delays in the project."
⚠ May contain grammatical issues
Science
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
7 human-written examples
These results provide an explanation for the unability of Metallo-β-lactamases to inactive monobactams and give some clues for inhibitor design.
This is due to the unability of Fourier coefficients to preserve details: contours are smoothed, and subtle differences such as the presence of one supplementary finger as can be seen to occur between posture 4 and posture 5, and between posture 8 and posture 9, are not detected when Fourier coefficients are used.
These data are consistent with other studies that described the unability of THC to avoid MDMA-induced hyperthermin in animals pretreated with the CB1 antagonist rimonabant.
Science
However the issues to control their delivery into the interest areas of the brain and their surgical administration linked to their unability to cross the blood brain barrier are many drawbacks responsible of undesirable side effects limiting their clinical use.
Science
We, however, could not resort to these approaches as anti-p65/RelA siRNAs revealed highly toxic to BMDCs (not shown) and unability to transfect BMDCs with plasmids is a major limitation of this system.
Science
acidicola shares numerous features with A. protothecoides, such as the unability to grow on nitrate, the upper limit of temperature for growth, and the tolerance to high concentrations of NaCl.
Science
In vertebrates and possibly other intron-rich genomes, it has been shown that exons exceeding a certain size may be misrecognized by the splicing machinery [ 15, 33], or prone to premature termination codons, due to the unability for NMD to act upon [ 16].
Science
Expert writing Tips
Best practice
When describing a lack of skill, consider using more specific terms like "lack of knowledge" or "deficiency in training" for greater clarity.
Common error
Avoid using "unability" in your writing. This is a non-standard word. Always use "inability" to refer to a lack of ability.
Source & Trust
84%
Authority and reliability
1.8/5
Expert rating
Real-world application tested
Linguistic Context
The term "unability" functions as a noun, intended to denote a lack of capacity or skill. However, as Ludwig AI points out, it is a non-standard form, and the correct term is "inability".
Frequent in
Science
100%
Less common in
News & Media
0%
Formal & Business
0%
Encyclopedias
0%
Ludwig's WRAP-UP
In summary, while the term "unability" appears in a limited number of scientific texts, it is grammatically incorrect and not considered standard English. As Ludwig AI indicates, the correct and widely accepted term is "inability". When expressing a lack of capacity or skill, it's always best to use "inability" or other appropriate synonyms like "lack of ability" or "incapacity" to ensure clarity and grammatical correctness. Relying on grammatically sound language ensures effective communication.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
inability
This is the most direct and grammatically correct substitute for "unability".
lack of ability
This alternative emphasizes the absence of a specific skill or capacity.
incapacity
This suggests a more general or comprehensive lack of power or fitness.
failure to be able
Highlights the unsuccessful attempt to perform a task.
deficiency in skill
Focuses on a specific deficit in a particular skill set.
powerlessness
Implies a lack of control or strength to achieve something.
Helplessness
Emphasizes the state of being unable to help oneself or others.
disability
Refers to a physical or mental condition that limits a person's abilities.
incompetence
Implies a lack of the necessary skills or knowledge to perform a task adequately.
ineffectiveness
Suggests a lack of the desired or intended effect.
FAQs
Is "unability" a real word?
No, "unability" is not a recognized word in standard English. The correct term to use is "inability".
What is the difference between "unability" and "inability"?
"Unability" is a misspelling or non-standard form. "Inability" is the correct term for the lack of ability to do something.
How do I use "inability" in a sentence?
What are some synonyms for "inability"?
Some synonyms for "inability" include "lack of ability", "incapacity", and "deficiency".
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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
84%
Authority and reliability
1.8/5
Expert rating
Real-world application tested