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 restricted by
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "are restricted by" is correct and usable in written English.
It can be used to indicate limitations or constraints imposed on something or someone. Example: "The project timelines are restricted by the availability of resources and personnel."
✓ Grammatically correct
Science
News & Media
Formal & Business
Alternative expressions(20)
are limited by
are constrained by
are governed by
are influenced by
are dictated by
are subject to
are dependent on
are conditional on
are hampered by
are confined by
are circumscribed by
are curtailed by
are restrained for
are limited for
are exceeded by
are surpassed by
are overshadowed by
are eclipsed by
are inhibited upon
are reduced by
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
56 human-written examples
But some competitions are restricted by master-point totals.
News & Media
"We are restricted by it," Mr. Murdock said.
News & Media
In certain circumstances exports are restricted by the controlling body.
Encyclopedias
The Mets are restricted by confidentiality rules from discussing drug use by players.
News & Media
His movements are restricted by his mortal enemy, Prime Minister Ariel Sharon of Israel.
News & Media
Iraqi oil sales are restricted by the United Nations oil-for-food program.
News & Media
The circumstances under which judges can be removed from office are restricted by legislation.
News & Media
"Right now, it doesn't appear as if we are, primarily because our best players are restricted by base-year compensation.
News & Media
"Consumers want to buy more sustainably but are restricted by price, patchy availability and scepticism," says the report.
News & Media
Fassel has not ruled out making personnel changes, but his choices are restricted by one of the league's thinnest rosters.
News & Media
Solid-solid transformations are restricted by the slow rates of diffusion in solids.
Encyclopedias
Expert writing Tips
Best practice
When using "are restricted by", clearly state what is causing the restriction to provide context and clarity for the reader. Ensure the subject and the cause of restriction are logically connected.
Common error
Avoid using "are restricted by" without specifying the nature of the restriction. Instead of saying "actions are restricted by factors", be specific: "actions are restricted by budgetary constraints and legal regulations".
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "are restricted by" functions as a passive verb phrase indicating that a subject's actions, capabilities, or scope is limited or constrained by an external factor. It is commonly used to denote limitations imposed by rules, regulations, conditions, or other entities, as illustrated by Ludwig.
Frequent in
Science
36%
News & Media
32%
Formal & Business
1%
Less common in
Encyclopedias
3%
Wiki
1%
Reference
0%
Ludwig's WRAP-UP
In summary, the phrase "are restricted by" is a versatile and commonly used expression that indicates limitations or constraints imposed on a subject by external factors. As affirmed by Ludwig, it is grammatically correct and appropriate for diverse contexts, ranging from scientific discourse to news reporting. The phrase's frequent appearance in authoritative sources like The New York Times and scientific journals underscores its reliability and widespread acceptance. When using this phrase, clarity is crucial: specify the nature of the restriction to avoid vagueness and ensure the connection between the subject and the cause of restriction is logically sound.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
are limited by
Direct synonym, replacing 'restricted' with 'limited' to indicate a boundary or constraint.
are constrained by
Similar to 'restricted', but emphasizes the force or compulsion behind the limitation.
are bound by
Implies a legal or moral obligation that limits actions.
are governed by
Suggests that rules or regulations dictate the limits.
are dictated by
Highlights that external forces or conditions control the limits.
are subject to
Indicates that something is vulnerable to the influence or control of something else.
are dependent on
Shows that the possibility of action is determined by another factor.
are conditional on
Implies that fulfillment depends on certain conditions being met.
are influenced by
Suggests that the limit is the effect of the influence, so it could change more easily.
are regulated by
Highlights that a system of rules controls the limits.
FAQs
How can I use "are restricted by" in a sentence?
The phrase "are restricted by" indicates a limitation or constraint. For example, "The project timelines "are restricted by the availability of resources"".
What are some alternatives to "are restricted by"?
You can use alternatives such as "are limited by", "are constrained by", or "are governed by" depending on the context.
Which is correct: "are restricted by" or "is restricted by"?
The correct form depends on whether the subject is plural or singular. Use "are restricted by" for plural subjects (e.g., "the rules are restricted by law"), and "is restricted by" for singular subjects (e.g., "the rule is restricted by law").
What is the difference between "are restricted by" and "are influenced by"?
"Are restricted by" implies a hard limit or constraint, while "are influenced by" suggests a more subtle effect. Restrictions are firm boundaries, whereas influences are factors that impact but don't necessarily prevent something from happening.
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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
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested