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
is replace
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "is replace" is not correct in written English.
It appears to be a fragment and lacks proper grammatical structure. Example: "The old system is replace with a new one." (should be "is replaced")
⚠ May contain grammatical issues
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
41 human-written examples
The question is: replace them with what?
News & Media
"All you can do is replace the tissue".
News & Media
"What technology does not do is replace people," Mr. Bloomberg said.
News & Media
All we have done is replace old equipment with equivalent new equipment.
News & Media
What we need to do is replace him – with another wealthy smoothiechops!
News & Media
But what the Knicks have done is replace an inspiring mediocre star with an uninspiring mediocre star.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
18 human-written examples
Nani is replaced by Rolando.
News & Media
Planning is replaced by chaos.
News & Media
Rhetoric is replacing provision.
News & Media
Robin Miller is replacing Mr. Hand.
News & Media
Chaos is replacing order.
News & Media
Expert writing Tips
Best practice
Always ensure the verb "replace" is correctly conjugated and used with appropriate auxiliary verbs (e.g., "is replaced", "was replaced", "will be replaced") to maintain grammatical accuracy.
Common error
Do not use "is replace"; this omits the necessary past participle form. The correct form is "is replaced."
Source & Trust
60%
Authority and reliability
1.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "is replace" is an incorrect verb phrase. It attempts to use the verb "replace" in a passive construction but omits the required past participle form, creating a grammatically incomplete structure. As Ludwig AI pointed out, it needs to be fixed.
Frequent in
Science
0%
News & Media
0%
Formal & Business
0%
Less common in
Science
0%
News & Media
0%
Formal & Business
0%
Ludwig's WRAP-UP
In summary, the phrase "is replace" is grammatically incorrect and should be avoided. The correct passive form is "is replaced", or alternative phrases like "is substituted with" or "is exchanged for" can be used to express the intended meaning. As Ludwig AI clearly indicates, the absence of a past participle makes "is replace" an incomplete and incorrect verb phrase. It's not suitable for any form of writing, irrespective of the context. Always ensure correct grammar to effectively convey your message. Since there are no valid examples of "is replace" in the provided data, its frequency is considered missing.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
is replaced by
This corrects the grammar by using the passive voice to indicate substitution.
are replaced by
Adapting the verb to plural form in order to describe multiple substitutions.
gets replaced by
This is a more informal way of saying "is replaced by".
is substituted with
This alternative uses 'substituted' to convey a similar meaning of replacement.
has been replaced by
Using the present perfect tense to indicate a completed replacement.
is being replaced with
Using the present continuous tense to indicate an ongoing replacement process.
is exchanged for
This suggests a swapping of one thing for another.
is switched for
Expresses the idea of swapping one thing for another, maintaining the core meaning of substitution.
is superseded by
This implies that something newer or better has taken the place of something older.
is displaced by
This indicates that one thing has been moved out of its position by another.
FAQs
What is the correct way to use "replace" in the passive voice?
The correct passive voice constructions are "is replaced by", "was replaced by", or "has been replaced by", depending on the intended tense. For example, "The old system is "is replaced by" a new one".
What are some alternatives to "is replaced by"?
Alternatives include "is substituted with", "is exchanged for", or "is superseded by", depending on the specific nuance you want to convey. Each alternative offers a slightly different connotation of substitution.
Why is "is replace" grammatically incorrect?
"Is replace" is incorrect because it omits the past participle form of the verb "replace". The passive voice requires the auxiliary verb "is" to be followed by the past participle, "replaced".
Can I use "is replace" in any context?
No, "is replace" is grammatically incorrect and should be avoided in all formal and informal writing. Always use the correct form, such as "is replaced" or "is being replaced".
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
60%
Authority and reliability
1.5/5
Expert rating
Real-world application tested