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
blur the lines between
Grammar usage guide and real-world examplesUSAGE SUMMARY
"blur the lines between" is correct and commonly used in written English.
It means to cause confusion or ambiguity in distinguishing between two things. Example sentence: "The rise of social media has blurred the lines between personal and professional communication."
✓ Grammatically correct
News & Media
Science
Formal & Business
Alternative expressions(1)
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
53 human-written examples
BlackBerrys blur the lines between work and play.
News & Media
Everyone agreed to blur the lines between illusion and reality.
News & Media
In addition, half-baked analyses of anecdotal evidence often blur the lines between cause and consequence.
News & Media
Cable is hardly the only medium to blur the lines between news and commentary these days.
News & Media
As technology advances, will it continue to blur the lines between public and private?
News & Media
There's no way it doesn't blur the lines between employees' work and personal lives.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
7 human-written examples
Two British brothers blur the line between dance and pop.
News & Media
"Women who can blur the line between design and art.
News & Media
Guerrillas blur the line between combatants and non-combatants.
News & Media
The plan threatens to blur the line between nuclear and conventional arms.
News & Media
These companies blur the line between real data and genutainment.
News & Media
Expert writing Tips
Best practice
When using "blur the lines between", ensure that the two concepts you're connecting are genuinely becoming less distinct, not merely interacting or influencing each other.
Common error
Avoid using "blur the lines between" when you simply mean that two things are influencing each other. Blurring implies a loss of clear distinction, not just interaction. For example, saying that 'social media blurs the lines between marketing and customer service' is accurate if the roles are becoming indistinguishable. But if they're just more integrated, 'integrates marketing and customer service' is better.
Source & Trust
85%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "blur the lines between" functions as a verb phrase. It typically describes an action that makes the boundaries or distinctions between two or more things less clear. Ludwig examples show its usage in various contexts, indicating its wide applicability. According to Ludwig AI, the phrase is grammatically correct and commonly used.
Frequent in
News & Media
69%
Science
16%
Formal & Business
7%
Less common in
Academia
1%
Encyclopedias
0%
Wiki
0%
Ludwig's WRAP-UP
In summary, "blur the lines between" is a versatile and grammatically sound phrase used to describe the diminishing distinction between two or more concepts. As noted by Ludwig AI, the phrase is considered grammatically correct and commonly used. Its prevalence in news, media and science indicates a broad applicability across diverse contexts. When writing, ensure the phrase accurately reflects a genuine reduction in clarity, rather than just simple interaction or influence. Related phrases like "obscure the distinction between" or "blend the boundaries of" offer nuanced alternatives depending on the intended meaning. With its frequent use and clear communicative purpose, "blur the lines between" remains a valuable asset in effective communication.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
obscure the distinction between
Focuses on making the distinction less clear, rather than eliminating the boundary entirely.
blend the boundaries of
Emphasizes merging or combining the boundaries, rather than just making them indistinct.
merge the categories of
Highlights the fusion of distinct categories into a single, unified one.
overlap the areas of
Suggests a partial sharing or covering of areas, not necessarily complete indistinguishability.
confuse the separation of
Implies creating uncertainty or difficulty in telling apart two separate things.
weaken the division between
Focuses on reducing the strength of a division, without necessarily eliminating it.
mix the elements of
Highlights the blending of different elements together, leading to a less clear distinction.
diminish the contrast between
Emphasizes reducing the difference or opposition between two things.
unclear the difference between
Focuses on making the difference more difficult to perceive.
cloud the interface between
Suggests making the interaction or boundary less clear and more ambiguous.
FAQs
How can I use "blur the lines between" in a sentence?
Use "blur the lines between" to describe how distinctions between two or more concepts are becoming less clear. For example, "Technology is blurring the lines between work and leisure."
What's the difference between "blur the lines between" and "erase the lines between"?
"Blur the lines between" suggests the distinction is less clear, while "erase the lines between" implies the distinction has completely disappeared.
What can I say instead of "blur the lines between"?
You can use alternatives like "obscure the distinction between", "blend the boundaries of", or "merge the categories of" depending on the context.
Is it appropriate to use "blur the lines between" in formal writing?
Yes, "blur the lines between" is appropriate in formal writing, especially when discussing abstract concepts or societal shifts. Just ensure the context aligns with its meaning of reduced distinction.
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
85%
Authority and reliability
4.6/5
Expert rating
Real-world application tested