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
that have existed
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "that have existed" is correct and usable in written English.
It can be used to refer to things or entities that have been present or in existence up to the current time. Example: "The ancient civilizations that have existed for thousands of years continue to influence modern culture."
✓ 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
But the existence of caste-based sects within Sikhism illustrates how tenacious divisions that have existed for millennia can be.
News & Media
harveynichols.com 3 The number of Globe theatres that have existed on the South Bank since 1599.
News & Media
The relations that have existed traditionally are being modified by the exploitation of natural resources.
News & Media
The current construction work is largely to replace walls and barriers that have existed for years.
News & Media
"All the barriers that have existed with other solutions pretty much go away now," he said.
News & Media
But many town residents dislike redrawing boundaries that have existed for generations.
News & Media
The Farc is but one of many illegal armed groups that have existed in Colombia.
News & Media
He's simply doubled down on the tactics that have existed for decades.
News & Media
It's a very useful corrective to monolithic ideals that have existed in Ireland".
News & Media
Spain's unemployment is so high partly because of particular local forces that have existed for decades.
News & Media
Instead, it seems to be a very deliberate reinterpretation of living laboratories that have existed and that continue to exist.
Academia
Expert writing Tips
Best practice
When using "that have existed", ensure the context clearly indicates the timeframe or duration being referenced. For instance, specify "that have existed for centuries" for added clarity.
Common error
Don't replace simpler alternatives like "that existed" with "that have existed" when the present perfect tense isn't necessary. Overusing the present perfect can make your writing sound unnecessarily verbose.
Source & Trust
81%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "that have existed" functions as a relative clause modifying a noun. It provides additional information about the noun by specifying its existence over a period. Ludwig confirms its correctness and usability.
Frequent in
News & Media
48%
Academia
23%
Science
18%
Less common in
Encyclopedias
2%
Formal & Business
0%
Reference
0%
Ludwig's WRAP-UP
In summary, "that have existed" is a grammatically correct and highly versatile relative clause used to describe entities or concepts that were present in the past. As Ludwig highlights, it appears frequently in news, academic, and scientific contexts. When writing, remember to choose the best way to say it and choose an alternative if there is one. The choice between "that existed" and "that have existed" depends on the specific nuance you wish to convey, with the latter emphasizing existence over a period leading up to the present. Avoid overusing "that have existed" when a simpler past tense construction suffices. This phrase is a useful way to express how something used to be.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
that existed
Omits "have", creating a simpler past tense construction.
that were in existence
Replaces "existed" with a more descriptive phrase emphasizing a state of being.
that have been present
Focuses on the presence of something over time.
that used to exist
Highlights a past habitual state of existence.
which have been around
Uses a more informal and conversational tone.
that were formerly present
Formal alternative highlighting a previous state of being.
that once thrived
Suggests a period of success or flourishing in the past.
that prevailed in the past
Emphasizes dominance or widespread existence at a former time.
that are now gone
Emphasizes the absence of something that previously existed.
that are historical
Focuses on events or entities belonging to the past.
FAQs
How do I use "that have existed" in a sentence?
Use "that have existed" to describe things or entities that were present at some point in the past and might or might not exist now. Example: "The ancient civilizations "that have existed" have left behind valuable knowledge."
What can I say instead of "that have existed"?
You can use alternatives such as "that existed", "that were in existence", or "which have been around", depending on the context.
Which is correct, "that existed" or "that have existed"?
Both "that existed" and "that have existed" can be correct, but they imply slightly different things. "That existed" refers to a specific point in the past, while "that have existed" refers to a period of time up to the present.
What's the difference between "that have existed" and "that used to exist"?
"That have existed" implies something was present for a period and may or may not be anymore, while "that used to exist" specifically implies that something no longer exists.
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
81%
Authority and reliability
4.5/5
Expert rating
Real-world application tested