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
replace by
Grammar usage guide and real-world examplesUSAGE SUMMARY
"replace by" is a correct and usable part of a sentence in written English.
It is used when replacing something with something else. For example: "She replaced her old car with a new one, replace by a Honda Civic."
✓ Grammatically correct
Science
News & Media
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
Things get simpler if you first replace by.
Academia
A delay or repeal on one tax that will probably be replace by other revenue anyway?
News & Media
To replace by good time, a good structure, a good dynamic, good options, it's possible.
News & Media
Imran Kahn has been replace by Raju Bhatt, a human rights specialist.
News & Media
Then to convert from continuous to discrete time, we replace by, where is an integer interpreted as the sample number.
Academia
Then replace by, so (2.95) follows.
Also we replace by in (1.4), then we have (2.8).
If we replace by into (2.5), we obtain (2.6).
Step 9. Calculate, in (17) and replace by.
This remains valid if we replace by in (2.8).
The inequalities (i)–(iii) also hold if we replace by.
Expert writing Tips
Best practice
When using "replace by", ensure that the context clearly indicates what is being replaced and what it is being replaced with to avoid ambiguity.
Common error
Avoid using "replace by" when the intention is to add to, rather than substitute. "Replace by" implies a complete removal of the original element, so ensure it aligns with your intended meaning.
Source & Trust
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "replace by" functions as a verb phrase indicating the action of substituting one entity with another. As Ludwig indicates, it's commonly used to describe a replacement process, similar to other substitution phrases.
Frequent in
Science
48%
News & Media
32%
Academia
20%
Less common in
Formal & Business
0%
Encyclopedias
0%
Wiki
0%
Ludwig's WRAP-UP
In summary, "replace by" is a versatile phrase used to indicate the substitution of one element with another. As confirmed by Ludwig, it enjoys widespread use across diverse fields, including science, news, and academia. The phrase is considered grammatically correct and suitable for neutral contexts. When using "replace by", ensure clarity in specifying what is being replaced and its replacement. While alternatives such as "substitute with" or "exchange for" exist, "replace by" remains a clear and effective choice for indicating substitution.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
substitute with
Emphasizes the act of substituting one element with another, focusing on the action of substitution.
exchange for
Highlights the swap between two elements, indicating a mutual replacement.
supplant with
Implies a more forceful or complete replacement, where the new element takes over entirely.
use instead of
Focuses on the act of using an alternative in place of the original.
change to
Suggests a transformation or modification, where the original is altered to become something new.
convert to
Implies a more significant transformation, often involving a change in form or function.
swap for
Indicates a casual exchange or trade between two elements.
switch to
Suggests a quick or easy change from one element to another.
adopt in place of
Highlights the conscious decision to choose and use a different element.
fill in for
Indicates a temporary substitution, where the new element takes over until the original returns.
FAQs
How can I use "replace by" in a sentence?
Use "replace by" to indicate the substitution of one thing with another. For example: "I will replace the old tires by new ones."
What's a synonym for "replace by"?
Alternatives to "replace by" include "substitute with", "exchange for", or "supplant with".
Is there a difference between "replace by" and "replace with"?
While similar, "replace by" is generally used when the agent doing the replacing is emphasized, whereas "replace with" focuses on the item that is being used as the replacement. In many contexts, they are interchangeable.
When should I not use "replace by"?
Avoid using "replace by" if you're adding something without removing the original item. In such cases, use phrases like "add to" or "augment with".
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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
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested