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
not discernible
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "not discernible" is correct and usable in written English.
It can be used when describing something that cannot be seen, detected, or understood clearly. Example: "The details of the painting were so faded that they were not discernible to the naked eye."
✓ Grammatically correct
Science
News & Media
Encyclopedias
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
However, in B samples the influence of different cryoprotectants was not discernible.
Science
However, the initial displacement and initial vibration stages were not discernible for stable gold screws.
However, their method contains a flaw, not discernible by reading their article, that invalidates this conclusion.
Science
The effect of humidity variation in the ambient air is not discernible.
Science
If she does, they are not discernible in the portraits for which she is famous.
News & Media
If she is not, a flair for the daft is not discernible.
News & Media
This study shows that the mitochondrial genome pool can harbor signals that are not discernible in lower resolution data sets.
Science & Research
Impact of geomagnetic activity is not discernible with the topside sounding data due to mixed positive and negative storm-time effects.
Science
Simple variation from month to month was dominated by a fluctuation with one-year period and the correlation was not discernible after 1993.
Science
Their physical appearance as lineaments seen by remote sensing is not discernible, as they define km-long and narrow tabular zones of high fracture intensity.
Science
For example, in standard digital photography each image is appreciated individually, and the image sensor flaws after the a priori correction are normally not discernible.
Science & Research
Expert writing Tips
Best practice
When using "not discernible", ensure the context clearly indicates what cannot be perceived or distinguished. Specificity enhances clarity.
Common error
Avoid using "not discernible" when simpler terms like "not visible" or "not clear" would suffice. Overusing formal language can make your writing sound pretentious.
Source & Trust
82%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "not discernible" functions as an adjective phrase, modifying a noun to indicate that something cannot be easily perceived or distinguished. As confirmed by Ludwig AI, it's a grammatically sound way to express the lack of clear visibility or detectability.
Frequent in
Science
72%
News & Media
17%
Encyclopedias
2%
Less common in
Wiki
2%
Formal & Business
0%
Social Media
0%
Ludwig's WRAP-UP
In summary, the phrase "not discernible" is a grammatically correct and frequently used expression, predominantly in science and news contexts. According to Ludwig AI, it effectively conveys that something is difficult or impossible to perceive. While synonyms like "imperceptible" or "undetectable" offer alternatives, "not discernible" finds its strength in precision, especially within scientific and technical writing. When using this phrase, remember to maintain specificity to avoid ambiguity and prefer simpler alternatives in casual writing for clarity and ease of understanding.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
imperceptible
Emphasizes the subtlety and lack of obviousness.
undetectable
Highlights the inability to find or notice something.
unnoticeable
Focuses on the lack of attention drawn to something.
invisible
Implies a complete lack of visibility.
unseen
Highlights the absence of visual observation.
obscure
Suggests that something is unclear or vague.
indistinguishable
Highlights the inability to tell two or more things apart.
unclear
Focuses on a lack of clarity or understanding.
vague
Indicates a lack of precision or detail.
difficult to perceive
More explicitly describes the challenge in noticing something.
FAQs
How can I use "not discernible" in a sentence?
You can use "not discernible" to describe something that is difficult to see, hear, or understand clearly. For example, "The subtle difference in color was "not discernible" to the untrained eye."
What can I say instead of "not discernible"?
You can use alternatives like "imperceptible", "undetectable", or "unnoticeable" depending on the specific context.
When should I use "not discernible" versus "invisible"?
"Not discernible" suggests something is difficult to perceive, while "invisible" means it cannot be seen at all. Use "not discernible" when something is potentially there but hard to detect, and "invisible" when it's entirely absent from sight.
Is it better to use "not discernible" or "not visible" in scientific writing?
While both are acceptable, "not discernible" often implies a greater degree of subtlety or technical limitation in observation, which can be more appropriate in scientific contexts where precision is valued. However, "not visible" is perfectly acceptable.
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
82%
Authority and reliability
4.5/5
Expert rating
Real-world application tested