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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
they are permanent
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "they are permanent" is correct and usable in written English.
You can use it when discussing something that is intended to last indefinitely or is unchangeable. Example: "The changes made to the policy are significant, and they are permanent."
✓ Grammatically correct
News & Media
Science
Formal & Business
Alternative expressions(19)
they are immutable
they are fixed
they are invariable
they are consistent
they are constant
they are established
they are set
they are secured
they are fed
they are confirmed
they are misused
they are engaged
they are finished
they are fitted
they are certain
they are solid
they are reliable
they are uniform
they are congruent
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
37 human-written examples
This study implies that dogs, but not jackals, are reservoirs because they are permanent hosts, yet many dog populations, as with many jackal populations, do not permanently support rabies cycles.
Science
"They are permanent scars," he added.
News & Media
"They are permanent fund-raisers," Mr. Strickler said.
News & Media
But there is no telling if they are permanent.
News & Media
What we don't know is if they are permanent changes or tactical changes".
News & Media
In many lower invertebrates, gonads are temporary organs; in higher forms, however, they are permanent.
Encyclopedias
Human-verified similar examples from authoritative sources
Similar Expressions
17 human-written examples
They're pretty faint, but they're permanent.
News & Media
Almost all of them were white, and most acted, both on screen and off, as if they were permanent fixtures of the upper class.
News & Media
We studied world climates as though they were permanent fixtures, the Sahara an aberrant stretch of sand, the Amazon forest an eternal and inviolable spread of forest.
News & Media
"I've got my lists of players, whether they be permanent targets or loans for various positions.
News & Media
It doesn't tell you whether they're permanent residents or not permanent residents," he said.
News & Media
Expert writing Tips
Best practice
When using "they are permanent", ensure the context clearly establishes what "they" refers to, avoiding ambiguity.
Common error
Avoid using "they are permanent" when describing situations or conditions that are likely to change or evolve over time. Ensure the characteristic you describe really has limited chance of varying. For example, is better to avoid saying "they are permanent" in relation to a political trend.
Source & Trust
83%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "they are permanent" functions as a predicate adjective, describing a quality or state of being for a plural subject. As Ludwig AI shows, this describes the characteristics of things in news, science and everyday discussions.
Frequent in
News & Media
32%
Science
48%
Formal & Business
8%
Less common in
Encyclopedias
6%
Wiki
6%
Reference
0%
Ludwig's WRAP-UP
The phrase "they are permanent" is a common and grammatically sound way to express that something is intended to last or is unchangeable. As Ludwig AI confirms, it appears frequently in news, scientific publications, and business contexts. When using this phrase, ensure the context clearly identifies what "they" refers to and that the situation is, indeed, likely to endure. Alternatives like "they are lasting" or "they are immutable" can offer subtle variations in meaning, depending on the specific nuance you wish to convey.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
they are lasting
Focuses on the duration or continuation of something.
they are enduring
Emphasizes the ability to withstand or remain strong over time.
they are immutable
Highlights the unchangeable nature of something.
they are irreversible
Stresses the inability to revert to a previous state.
they are fixed
Indicates that something is firmly established and not subject to change.
they are unalterable
Similar to immutable, but perhaps with a slightly broader connotation.
they are set in stone
Idiomatic expression indicating a firm and unchangeable decision or arrangement.
they are indelible
Focuses on the impossibility of removing or erasing something.
they are perpetual
Implies an unending or continuous duration.
they are unchangeable
Highlights the characteristic of something that cannot be modified.
FAQs
How can I use "they are permanent" in a sentence?
Use "they are permanent" to describe features, conditions, or changes that are intended to last indefinitely or are unchangeable. For example, "The policy changes are significant, and "they are permanent"."
What can I say instead of "they are permanent"?
You can use alternatives like "they are lasting", "they are enduring", or "they are immutable" depending on the context.
Which is correct, "they are permanent" or "it is permanent"?
The correct choice depends on the subject. Use "they are permanent" when referring to multiple items or a plural subject. Use "it is permanent" when referring to a singular subject.
What's the difference between "they are permanent" and "they will be permanent"?
"They are permanent" describes a current state of permanence. "They will be permanent" indicates a future expectation or intention of permanence.
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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
83%
Authority and reliability
4.5/5
Expert rating
Real-world application tested