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
constrain by
Grammar usage guide and real-world examplesUSAGE SUMMARY
'constrain by' is a correct and usable phrase in written English.
You use it to express the sense of limiting something or someone. For example, "The tight budget constraints all new projects by 20%".
✓ Grammatically correct
Science
News & Media
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
2 human-written examples
Consequently, it can only satisfy the receive DOF constrain by, but fails on the transmit DOF constraint since.
The consumer's utility resulting from electricity usage and the consumption of other composite good is constrain by his/her income (m), given the market prices of the goods and services.
Human-verified similar examples from authoritative sources
Similar Expressions
57 human-written examples
But he was constrained by two things.
News & Media
Teaching has been constrained by technology.
News & Media
Reality isn't constrained by studio notes.
News & Media
Ought theatre be constrained by ethical considerations?
News & Media
Politicians are constrained by public opinion.
News & Media
And sometimes he was constrained by deals.
News & Media
Oprah's not constrained by that".
News & Media
Conversation is no longer constrained by politics.
News & Media
Mr. Pataki is also constrained by circumstance.
News & Media
Expert writing Tips
Best practice
When using "constrain by", ensure that the agent causing the constraint is clearly identified to avoid ambiguity. For example, "Project timelines are constrained by budget limitations" provides a clearer understanding than "Project timelines are constrained."
Common error
Avoid overstating the impact of the constraint. Saying something is "completely constrained" might be inaccurate if there's still some flexibility. Instead, consider using qualifiers like "largely constrained" or "significantly constrained" to reflect a more nuanced situation.
Source & Trust
89%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "constrain by" functions as a passive verb construction indicating limitation or restriction. Ludwig AI confirms its usability. The auxiliary verb (e.g., is, are, was, were) precedes "constrain", followed by "by" and the agent or factor causing the restriction.
Frequent in
News & Media
50%
Science
50%
Formal & Business
0%
Less common in
Academia
0%
Encyclopedias
0%
Wiki
0%
Ludwig's WRAP-UP
In summary, "constrain by" is a grammatically correct phrase used to express the idea of something being limited or restricted, as confirmed by Ludwig AI. Although relatively rare in occurrence, it appears in various contexts, particularly in news and scientific publications. It serves to explain the reasons or sources of limitations. When using this phrase, clarity in identifying the agent causing the constraint is essential. While similar to alternatives like "limit by" and "restrict by", "constrain by" often implies a stronger or more formal sense of restriction.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
limit by
This alternative replaces "constrain" with the simpler verb "limit", offering a more direct expression of restriction.
restrict by
Similar to "limit by", this option substitutes "constrain" with "restrict", emphasizing a formal limitation.
inhibit by
This alternative suggests a hindering effect, where something is held back or prevented by a specific factor.
hamper by
Focuses on the impediment or difficulty caused by something, rather than a strict limitation.
circumscribe by
This option uses a more formal verb to indicate defining strict boundaries or limits.
bound by
Emphasizes being obligated or restricted by a rule, agreement, or principle.
curtail by
Suggests a reduction or cutback imposed by a specific factor.
impede by
This option highlights the obstruction or slowing down of progress due to something.
hold back by
Implies a restraining force that prevents full advancement or expression.
restrained by
This option adds an element of control or self-control, suggesting that someone or something is deliberately kept in check.
FAQs
How can I use "constrain by" in a sentence?
Use "constrain by" to indicate that something is being limited or restricted. For example, "Our options are "constrained by" the available resources".
What are some alternatives to "constrain by"?
Alternatives include "limit by", "restrict by", or "inhibit by", depending on the specific nuance you want to convey.
Is it better to use "constrained by" or "limited by"?
Both "constrained by" and "limited by" are grammatically correct and similar in meaning. The choice depends on the context; "constrained by" often implies a more forceful or formal restriction than "limited by".
What's the difference between "constrain by" and "restrict by"?
"Constrain by" and "restrict by" are very similar. "Restrict by" often implies a clearer set of rules or boundaries, while "constrain by" can suggest a broader set of limitations or pressures.
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
89%
Authority and reliability
4.5/5
Expert rating
Real-world application tested