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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
thin line
Grammar usage guide and real-world examplesUSAGE SUMMARY
"thin line" is a correct and usable phrase in written English.
You can use it to describe a situation or decision where there is a very small difference between two options. For example: "Choosing between right and wrong is often a thin line."
✓ Grammatically correct
News & Media
Science
Wiki
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
59 human-written examples
It's a thin line.
News & Media
It's a very thin line.
News & Media
They are walking a thin line".
News & Media
A thin line of light.
News & Media
"That's a very thin line to walk".
News & Media
That's a thin line to walk".
News & Media
A thin line of eyeliner, sure.
News & Media
There's a thin line we're treading.
News & Media
"It's a thin line and I'm fuckin' with it".
News & Media
There is a very thin line between the two.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
1 human-written examples
Frame eyes with a medium-thin line of black kohl.
Wiki
Expert writing Tips
Best practice
Use "thin line" to illustrate situations where a minor change can lead to significantly different outcomes. For instance, "There's a thin line between confidence and arrogance."
Common error
Avoid using "thin line" when you actually mean "bottom line", which refers to the financial result of a company's operations. While both involve lines, they have entirely different meanings.
Source & Trust
82%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "thin line" functions primarily as a noun phrase that serves as a subject complement or object of a preposition. It describes a subtle distinction or boundary, often between two contrasting concepts or states. Ludwig provides numerous examples illustrating this usage.
Frequent in
News & Media
63%
Wiki
20%
Science
9%
Less common in
Formal & Business
5%
Reference
3%
Social Media
0%
Ludwig's WRAP-UP
The phrase "thin line" is a versatile expression used to describe a subtle distinction between two often contrasting concepts. It is grammatically sound and sees frequent use across diverse contexts, especially in news and media. According to Ludwig, the phrase is correct and usable. The related phrases such as "fine distinction" and "delicate balance" offer alternative ways to express this idea. When using "thin line", be mindful of potential confusion with "bottom line", and remember that it emphasizes the precarious nature of a situation where a small change matters. The high frequency and varied application in authoritative sources underscore its importance in effective communication.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
fine line
A more common synonym, directly replacing "thin" with "fine".
fine distinction
Focuses on the subtlety of the difference.
slight difference
Directly states the minimal variation between two things.
delicate balance
Emphasizes the need for careful equilibrium.
narrow margin
Highlights the small degree of tolerance or difference.
subtle boundary
Underscores the understated nature of the dividing point.
razor's edge
Implies a precarious and potentially dangerous situation.
tenuous distinction
Stresses the fragility and potential unreliability of the difference.
precarious balance
Highlights the instability of the situation.
hairline fracture
Uses a medical metaphor to indicate a barely visible divide.
FAQs
How can I use "thin line" in a sentence?
What is a synonym for "thin line"?
Synonyms for "thin line" include "fine line", "fine distinction", "delicate balance", or "narrow margin", depending on the specific context.
What does it mean to "walk a thin line"?
To "walk a "thin line"" means to be in a situation where one must be very careful not to make a mistake, because the consequences could be severe. It implies navigating a delicate or precarious situation.
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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
82%
Authority and reliability
4.5/5
Expert rating
Real-world application tested