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
are substituted
Grammar usage guide and real-world examplesUSAGE SUMMARY
"are substituted" is a correct and commonly used phrase in written English.
It means that something is being replaced or exchanged for something else. Example: In the recipe, butter can be substituted for oil to make the dish healthier.
✓ Grammatically correct
Science
News & Media
Encyclopedias
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
In warmer climates, wheeled carts are substituted for the sleds.
Encyclopedias
Then, known weights are substituted for the unknown load.
Encyclopedias
Where possible, local products are substituted for imports.
News & Media
Instead, gifts of pencils or erasers to classmates are substituted.
News & Media
(Sometimes hummus and cold garlic mashed potatoes are substituted in the spreads).
News & Media
Mr. Maazel used the lightly rescored version (flutes are substituted for oboes) that Mozart prepared for Salzburg in 1779.
News & Media
When nickel metal hydride batteries are substituted, the driving range is doubled.
Encyclopedias
In junior rugby league, players cannot be sent off for indiscretions, but the referee can order they are substituted.
News & Media
Animal power and machinery are substituted for human labour; mechanical power then replaces animal power.
Encyclopedias
These values are substituted into Eq. (30).
If these parameters are substituted into Eqs.
Expert writing Tips
Best practice
When using "are substituted", ensure the replacement maintains the functionality or purpose of the original element.
Common error
Avoid using incorrect prepositions with "are substituted". The correct form is "are substituted for" or "are substituted by/with", depending on whether you're focusing on what's being replaced or what's doing the replacing.
Source & Trust
81%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "are substituted" functions as a passive verb construction, indicating that a subject undergoes the action of being replaced. This construction is commonly used to describe alterations or replacements, as shown in Ludwig's examples.
Frequent in
Science
56%
News & Media
28%
Encyclopedias
6%
Less common in
Wiki
4%
Formal & Business
0%
Social Media
0%
Ludwig's WRAP-UP
In summary, "are substituted" is a grammatically correct and very common passive verb phrase used to indicate that something is being replaced by something else. As verified by Ludwig, it is frequently found in scientific, news, and encyclopedic contexts. When using this phrase, ensure correct preposition usage ("for", "by", or "with") and consider alternative phrases like "are replaced" or "are exchanged" for nuanced meaning. Pay attention to the register, as it tends to be more formal, though its use can adapt to informal contexts depending on the subject matter.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
are replaced
Indicates a direct replacement with a new element.
are exchanged
Suggests a reciprocal replacement.
are interchanged
Implies elements switching places.
are superseded
Indicates a newer version taking precedence.
are displaced
Emphasizes removal due to a replacement.
are swapped
Suggests an informal exchange.
are supplanted
Indicates gradual or forceful replacement.
are overridden
Implies a higher authority is replacing something.
are converted
Indicates a transformation during replacement.
are amended
Suggests a modification through replacement.
FAQs
How can I use "are substituted" in a sentence?
You can use "are substituted" to indicate that something is being replaced by something else. For example, "In this recipe, eggs "are substituted" with applesauce to reduce fat content".
What can I say instead of "are substituted"?
Alternatives include "are replaced", "are exchanged", or "are interchanged" depending on the specific nuance you want to convey.
Which is correct, "are substituted for" or "are substituted with"?
"Are substituted for" means something is being replaced by something else. "Are substituted with" (or "by") indicates what is doing the replacing. Both are valid, but their usage depends on the context.
What's the difference between "are substituted" and "are replaced"?
While similar, "are substituted" often implies that the replacement serves a similar function or purpose, while "are replaced" is a more general term for replacement without necessarily implying functional equivalence.
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
4.6/5
Expert rating
Real-world application tested