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
significantly lesser extent
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "significantly lesser extent" is not correct in standard English; it should be "significantly lesser extent" or "lesser extent." You can use it when comparing the degree or level of something in relation to another, but it is better to use "to a significantly lesser extent" for clarity.
Example: "The new policy affects employee productivity to a significantly lesser extent than anticipated."
⚠ May contain grammatical issues
Science
News & Media
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
37 human-written examples
The Ino80 and Ies2 subunits also bind to the H2A-H2B dimer, but to a significantly lesser extent than Arp5.
Science & Research
All the complexes are inhibiting the growth of other tested common microbial flora to a significantly lesser extent, making them selective towards H37Rv in the preliminary analysis.
Science
The most significant of these is the Smyd3 locus where intragenic insertions surrounding exons 6 8 are present to a significantly lesser extent in the late-stage lymphomas samples (Supplementary Fig. 11r).
Science & Research
These vacancies are the result of presidential lassitude in filling the spots and, to a significantly lesser extent, of congressional failure to act on the few nominees that have been sent to the Senate for confirmation.
News & Media
Unlike the sweeping social programs of the 1960s, the Obama plan, with its talk of "green jobs" and energy efficiency savings, seems aimed more at a middle class that missed out on the boom than at the nation's poorest, who would benefit to a significantly lesser extent.
News & Media
Osteoblast culture mineralization was dose-dependently inhibited by pVTK and to a significantly lesser extent by scrambled pVTK, while the nonphosphorylated and scrambled forms had no effect, indicating that inhibition of osteoblast mineralization is dependent on both peptide sequence and charge.
Science
Human-verified similar examples from authoritative sources
Similar Expressions
23 human-written examples
Correspondingly, the cis/trans isomerization of the proline bonds affects folding of the EGFP variant to significantly lesser extents than the preferred endo puckering of the (4S -FPro pyrrolidine ring.
Science
These three TFs were also significantly, but to a lesser extent, upregulated by sucrose alone.
Science
Exposure to soluble metal-free MSH also increased BALF cells significantly but to a lesser extent than PM-HD.
The results for the cultured cells showed that DSR-HSC numbers increased significantly above input (29-fold; p < 0,001) when UG26 cells were present together with SF plus IL-11 and to a slightly, but not significantly (p = 0.19), lesser extent (15-fold) when the UG26 cell conditioned medium (CM) was added instead of the UG26 cells.
Science
The assembly of soluble Ure2p into protein fibrils was significantly accelerated, although to a lesser extent than in the presence of identical concentrations of fibrillar full-length Ure2p, upon addition of higher Ure2p 1–93 and α-synuclein seed concentrations (Figure S3).
Science
Expert writing Tips
Best practice
For clarity and grammatical correctness, consider using "to a significantly lesser extent" instead of "significantly lesser extent" to improve readability.
Common error
Be mindful of potential redundancy. While "significantly lesser extent" is commonly used, ensure that the context doesn't already imply a significant difference, which would make the "significantly" redundant.
Source & Trust
82%
Authority and reliability
3.8/5
Expert rating
Real-world application tested
Linguistic Context
The phrase functions as an adverbial modifier, specifying the degree to which an action or state is reduced. As per Ludwig AI, the structure of the phrase is not grammatically correct but is frequently used. This suggests that while common, attention to phrasing may improve clarity.
Frequent in
Science
75%
News & Media
15%
Formal & Business
5%
Less common in
Wiki
3%
Encyclopedias
1%
Reference
1%
Ludwig's WRAP-UP
The phrase "significantly lesser extent" is used to describe a noticeable reduction in the degree or impact of something. Although commonly used, Ludwig AI indicates that it is not grammatically correct and suggests using "to a significantly lesser extent" for clarity. Its usage is most prevalent in scientific and news contexts, indicating a neutral to formal register. Remember to consider context to avoid redundancy. Alternative phrases like "substantially smaller degree" or "considerably reduced scope" can provide variety. When writing, it’s crucial to ensure clarity and grammatical correctness, even when using common expressions.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
substantially smaller degree
Replaces "extent" with "degree" and "lesser" with "smaller", using a synonym for "significantly".
considerably reduced scope
Uses "scope" instead of "extent" and "reduced" to replace "lesser", altering the noun while keeping the meaning similar.
markedly diminished impact
Substitutes "impact" for "extent" and "diminished" for "lesser", emphasizing the effect is notably reduced.
noticeably lower level
Replaces "extent" with "level" and "lesser" with "lower", indicating a clear and observable decrease.
appreciably smaller magnitude
Uses "magnitude" in place of "extent" and "smaller" for "lesser", focusing on the size or importance of the reduction.
distinctly slighter influence
Changes "extent" to "influence" and "lesser" to "slighter", implying a clearly weaker effect.
materially decreased proportion
Replaces "extent" with "proportion" and "lesser" with "decreased", highlighting a significant reduction in size or amount.
substantially reduced effect
Replaces "extent" with "effect" and "lesser" with "reduced", emphasizing the outcome is greatly diminished.
noticeably weaker presence
Uses "presence" in place of "extent" and "weaker" for "lesser", focusing on the reduced existence or visibility.
markedly lighter degree
Substitutes "degree" for "extent" and "lighter" for "lesser", implying a clearly less intense or severe effect.
FAQs
How can I rephrase "significantly lesser extent" to sound more formal?
For a more formal tone, consider using alternatives such as "to a considerably lesser degree", "to a substantially smaller extent", or "appreciably reduced scope".
Is it grammatically correct to say "significantly lesser extent"?
While commonly used, the phrase "significantly lesser extent" is considered grammatically questionable. It's generally recommended to use "to a significantly lesser extent" or simply "to a "lesser extent"".
What's the difference between "significantly lesser extent" and "much lesser extent"?
Both phrases indicate a reduction in degree, but "significantly lesser extent" emphasizes a more substantial difference than "much lesser extent". "Significantly" implies a statistically or practically important difference.
How to use "significantly lesser extent" in a sentence?
You can use "significantly lesser extent" to compare the degree to which something affects different subjects or situations. For example, "The policy affected small businesses to a significantly lesser extent than large corporations".
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
3.8/5
Expert rating
Real-world application tested