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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
existing lines
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "existing lines" is correct and usable in written English.
It can be used to refer to current or pre-established lines, whether in a literal or metaphorical context, such as in design, communication, or transportation. Example: "The architect decided to build upon the existing lines of the structure to create a more modern look."
✓ Grammatically correct
News & Media
Science
Formal & Business
Wiki
Alternative expressions(19)
existing ones
older lines
existing systems
current ones
pre-existing ones
established ones
present ones
incumbent ones
surviving ones
existing classes
existing interests
existing relatives
existing formulas
existing enterprises
existing paths
existing relationships
existing records
existing projects
existing premises
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
Cell lines become unstable or break down, many of those in existence have been nourished with mouse cells, and genetic diversity in the existing lines is sorely lacking.
News & Media
Furthermore, the existing lines are not necessarily immortal.
News & Media
New lines must be strung or existing lines improved.
News & Media
Lesser steps might at least rationalize existing lines of command.
News & Media
No more stem cells from embryos -- make do with existing lines -- may be good politics today.
News & Media
If you don't do HS2, you have to spend more on legacy upgrades [to existing lines].
News & Media
Scientists will now have access to financing for existing lines to complement their privately financed work.
News & Media
Software leases generally leave the company's existing lines of credit untapped and available for other purposes.
News & Media
Even upgrades to existing lines can mobilise opposition, as in Quickborn, south of Niebüll.
News & Media
More than a dozen have existing lines, including New Orleans, which is restoring a system devastated by Hurricane Katrina.
News & Media
President Bush took a giant leap forward in approving financing of stem cell research for existing lines.
News & Media
Expert writing Tips
Best practice
When discussing upgrades or modifications, specify the type of "existing lines" to provide clarity. For example, "upgrading existing power lines" is more precise than simply "upgrading existing lines".
Common error
Avoid using "existing lines" without context. Instead of saying "the project will impact existing lines", specify what kind of lines are affected, such as "the project will impact existing communication lines".
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "existing lines" functions primarily as a noun phrase, often serving as the object of a verb or preposition. According to Ludwig, it is a correct and usable phrase in written English. It identifies a set of lines that already exist, whether physical or abstract. For example, "upgrading existing lines" or "connecting to existing lines."
Frequent in
News & Media
49%
Science
20%
Wiki
12%
Less common in
Formal & Business
10%
Reference
6%
Encyclopedias
3%
Ludwig's WRAP-UP
In summary, the phrase "existing lines" is a grammatically sound and frequently used noun phrase, which refers to established infrastructure or systems. Ludwig confirms its correctness and usability in written English. Its neutral register makes it suitable for diverse contexts, from news reports to technical documents. To maximize clarity, it is important to specify the type of "existing lines" you are referring to. Alternatives include "current infrastructure" or "pre-existing systems", depending on the specific context.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
current infrastructure
Focuses on the present state of the infrastructure, highlighting its ongoing use.
established routes
Emphasizes the already set and recognized paths or courses.
pre-existing systems
Highlights that the systems were in place before a certain point in time.
legacy networks
Refers to older, often outdated networks that are still in use.
incumbent arrangements
Stresses the existing or holding of an office or position, related to arrangements.
present configurations
Indicates the current layout or arrangement of something.
available infrastructure
Focuses on the infrastructure that is currently accessible and ready for use.
in-place mechanisms
Highlights that the mechanisms are already active and functioning.
operational pathways
Refers to routes or methods that are currently being used for operation.
functioning setups
Implies that the setups are in working order and currently being used.
FAQs
How can I use "existing lines" in a sentence?
You can use "existing lines" to refer to pre-established routes, infrastructure, or systems. For example: "The new development will connect to the "existing lines" of the city's power grid."
What are some alternatives to the phrase "existing lines"?
Some alternatives include "current infrastructure", "established routes", or "pre-existing systems", depending on the specific context.
Is it better to say "existing lines" or "current lines"?
Both "existing lines" and "current lines" are grammatically correct, but "existing lines" emphasizes the pre-established nature, while "current lines" focuses on the present state.
When should I use "legacy networks" instead of "existing lines"?
Use "legacy networks" when you are referring to older, often outdated networks that are still in use. "Existing lines" is a more general term that can apply to any current lines, regardless of their age or technology.
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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
4.5/5
Expert rating
Real-world application tested