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
outer limits
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "outer limits" is correct and can be used in written English.
It refers to the boundaries or boundaries of something, or the maximum or extreme extent of something. Example: "The company pushed the outer limits of ethical business practices, causing controversy among consumers."
✓ Grammatically correct
News & Media
Science
Academia
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
MIDNIGHT (5) THE OUTER LIMITS -- "The Tribunal".
News & Media
Do say Pushes art's political potential to the outer limits.
News & Media
Shall we listen to their track Outer Limits?
News & Media
A festival of jazz and improvisation's outer limits.
News & Media
The Turbo S is still not near its outer limits.
News & Media
Membranes surround and define the outer limits of enveloped viruses.
Science
Last year, 24-inch wheels seemed to mark the outer limits.
News & Media
The difficult judgments [are] about where the outer limits of that are".
News & Media
Germany's grand, elegantly captivating project found its outer limits at the Stade Vélodrome.
News & Media
We can deploy measuring systems at the outer limits of understanding.
News & Media
But last week, the Bush campaign took that tendency to the outer limits.
News & Media
Expert writing Tips
Best practice
Use "outer limits" when discussing the maximum extent or boundaries of something, whether physical, conceptual, or metaphorical. For example: "The experiment pushed the outer limits of scientific understanding."
Common error
Avoid using "outer limits" when referring to minor or insignificant boundaries. This phrase implies a significant or substantial boundary, not a trivial one.
Source & Trust
89%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "outer limits" primarily functions as a noun phrase, often acting as a subject or object in a sentence. As Ludwig indicates, it generally denotes boundaries or maximum extents, often used in abstract contexts. The examples Ludwig provides showcase its versatility in various domains.
Frequent in
News & Media
50%
Science
25%
Academia
15%
Less common in
Formal & Business
5%
Encyclopedias
3%
Reference
2%
Ludwig's WRAP-UP
The phrase "outer limits" is a versatile and frequently used noun phrase, primarily functioning to describe the maximum extent or boundaries of something. As confirmed by Ludwig, it’s grammatically correct and widely applicable. Its usage spans across various contexts, including news, science, and academia, reflecting a neutral register adaptable to both formal and informal communication. When using "outer limits", ensure it accurately reflects significant boundaries, and consider synonyms like "extreme boundaries" or "ultimate limits" for nuanced expression. In summary, "outer limits" remains a robust and valuable component of the English language, effectively conveying the concept of pushing beyond conventional boundaries.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
outer boundaries
A direct synonym focusing on the external boundary.
ultimate limits
Focuses on the final, unsurpassable nature of the limits.
absolute boundaries
This emphasizes the definitive and unyielding nature of the limits.
maximum extent
Emphasizes the greatest possible degree or scope.
extreme boundaries
Highlights the extremity and potential difficulty in reaching those boundaries.
furthest extents
This emphasizes distance and the idea of something being stretched to its maximum.
farthest reaches
This suggests exploration or extension to the most distant points.
peripheral boundaries
Suggests limits that are on the edge or periphery.
the edge of possibility
Focuses on the limits of what is achievable or feasible.
confines
Emphasizes the restrictive nature of the limits or boundaries.
FAQs
How can I use "outer limits" in a sentence?
You can use "outer limits" to describe the furthest extent or boundary of something. For example: "The athlete pushed himself to the "outer limits" of his endurance."
What are some synonyms for "outer limits"?
Alternatives to "outer limits" include "extreme boundaries", "farthest reaches", or "ultimate limits", depending on the specific context.
Is it correct to say "the outer limit" instead of "outer limits"?
While "outer limit" can be used, "outer limits" is more common when referring to a general concept of maximum extent or boundaries. "Outer limit" is better suited for describing a single, specific boundary.
In what contexts is "outer limits" most appropriately used?
"Outer limits" is suitable for describing situations involving boundaries, extremes, or the furthest extents of something, often in contexts related to science, technology, or human potential.
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
89%
Authority and reliability
4.5/5
Expert rating
Real-world application tested