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
Persists unchanged
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "Persists unchanged" is correct and usable in written English.
It can be used to describe something that remains the same over time without any alterations or modifications. Example: "Despite the many challenges faced, the core values of the organization persists unchanged."
✓ Grammatically correct
Science
News & Media
Encyclopedias
Alternative expressions(6)
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
5 human-written examples
So the shape of a square persists unchanged as it rotates through 90 degrees this is one type of symmetry.
News & Media
In this paper, these forecasts are shown to be worse than the trivial forecast in which the most recently measured beach volume persists unchanged into the future, with a mean square error (MSE) about 13.5% worse (equivalent to a root mean square error (RMSE) 6.5% worse).
Science
Once attained, the state of equilibrium persists unchanged until extinction of the light stimulus (up to 10 min, data not shown), after which the pupil slowly returns (post-stimulus persistence; figure 1) to the dark adapted baseline condition.
Science
In conclusion, this study shows that, in non-human primates, dopamine depletion confers to L-DOPA the ability to activate the PKA/DARPP-32 and ERK cascades and that long-term (three months) administration of L-DOPA leads to regression of ERK activation, whereas cAMP/DARPP-32 signalling persists unchanged, or even exacerbated.
Science
Ams transcript abundance persists unchanged in secondary spermatocytes and is later gradually reduced.
Science
Human-verified similar examples from authoritative sources
Similar Expressions
55 human-written examples
Rhaphidograptus toernquisti managed to persist, unchanged, for some five million years.
News & Media
The real problem, which also goes unmentioned, is that dangerous deficits will accumulate over time if continuing trends and policies — especially in health care — persist unchanged.
News & Media
Wöhler and Liebig showed that a certain group of atoms persisted unchanged through a series of important related compounds, including benzoic acid.
Encyclopedias
The fact that homeoboxes apparently operate independently of selection (since they have persisted unchanged for hundreds of millions of years) indicates that, to an important extent, form is independent of function.
Encyclopedias
Behind their reappearance lies an extraordinary story, a tale of flowers that have persisted unchanged for centuries and of the unlikely band of experts who united to rescue them from extinction.
Academia
RESULTS: The rim of FDG accumulation was seen on the first post-treatment scan obtained 1-3 mo after therapy and persisted unchanged over the 2-26 mo follow-up period.
Academia
Expert writing Tips
Best practice
Use "persists unchanged" when you want to emphasize that something has remained constant despite external factors or the passage of time. It is particularly effective in scientific or formal contexts.
Common error
Avoid using "persists unchanged" in casual conversation or informal writing. Simpler alternatives like "stays the same" are often more appropriate and natural.
Source & Trust
82%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "persists unchanged" functions as a descriptive element, typically used to indicate that a particular condition, state, or characteristic has remained constant over a period. As noted by Ludwig AI, the phrase is grammatically correct and usable in written English.
Frequent in
Science
66%
News & Media
16%
Encyclopedias
16%
Less common in
Formal & Business
0%
Wiki
0%
Reference
0%
Ludwig's WRAP-UP
The phrase "persists unchanged" is a grammatically sound and usable expression that denotes a state of constancy despite the passage of time or external influences. As Ludwig AI indicates, it is suitable for describing conditions that remain unaltered, particularly in formal and scientific contexts. While "persists unchanged" is most frequently encountered in scientific literature, it also appears in news media and encyclopedic entries, underscoring its versatility. For more informal settings, simpler alternatives such as "remains constant" or "stays the same" may be more appropriate. Overall, "persists unchanged" is a valuable phrase for emphasizing stability and continuity.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
remains constant
Emphasizes the steadiness and lack of variation over time.
stays the same
A simpler and more direct way to express the lack of change.
endures unaltered
Highlights the endurance and the absence of alterations.
continues unmodified
Focuses on the continuation without any modifications.
prevails unchanged
Suggests a stronger sense of overcoming challenges while remaining the same.
is maintained intact
Stresses the preservation of something in its complete form.
holds steady
Implies a stable and consistent state despite potential disruptions.
remains as is
A colloquial expression indicating no change from the original state.
carries on without variation
Emphasizes the continuity and the lack of any changes or fluctuations.
sustains its form
Highlights the maintenance of the physical or structural integrity.
FAQs
How can I use "persists unchanged" in a sentence?
You can use "persists unchanged" to describe a condition or state that remains constant over time, such as, "The chemical composition of the sample "persists unchanged" despite variations in temperature".
What are some alternatives to "persists unchanged"?
Some alternatives include "remains constant", "stays the same", or "endures unaltered", depending on the specific nuance you want to convey.
Is "persists unchanged" formal or informal?
"Persists unchanged" is generally considered a formal phrase, suitable for academic, scientific, or professional writing. In informal contexts, simpler alternatives might be preferred.
Which is more appropriate: "persists unchanged" or "remains unchanged"?
Both "persists unchanged" and "remains unchanged" are grammatically correct and convey a similar meaning. The choice often depends on the desired level of formality and the specific context, with "persists" implying a continued existence over time.
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