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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
which calls for
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "which calls for" is a correct and usable phrase in written English.
You can use it when introducing a situation or plan that requires a certain action or response. For example: "This situation which calls for immediate action is becoming increasingly urgent."
✓ Grammatically correct
News & Media
Science
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
58 human-written examples
But they also raise inflation, which calls for tightening.
News & Media
Tells her that she moved her hands in certain scene which calls for calm.
News & Media
The lasagna, which calls for minced onions and cooking sherry, sounds particularly tasty.
News & Media
A white normally wouldn't stand up to the game, which calls for a tannin-rich red.
News & Media
Russia wants "a phased transition", which calls for dialogue between the opposition and Mr Assad.
News & Media
on California's budget, which calls for severe spending cuts to deal with a $15.7 billion shortfall.
News & Media
We usually hear Hamas's resistance voice, which calls for the destruction of Israel.
News & Media
Sudan is partly governed by Islamic law, which calls for women to dress modestly.
News & Media
The road map, which calls for a Palestinian state by 2005, suffers from vagueness.
News & Media
Discussion of the Senate Resolution 21, which calls for establishment of a Commission on Government Security.
News & Media
I preferred Mr. Brachman's version, which calls for a touch of lemon.
News & Media
Expert writing Tips
Best practice
When using "which calls for", ensure that the clause clearly and directly relates to the noun it modifies to avoid ambiguity. For example, "The situation, which calls for immediate action, is worsening."
Common error
Avoid using "which calls for" in restrictive clauses (those essential to the sentence's meaning). It's best suited for non-restrictive clauses, which add extra, non-essential information. If the clause is essential, consider using "that requires" instead.
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "which calls for" functions as a relative clause, specifically a nonrestrictive (or nonessential) clause, that modifies a noun or noun phrase. It introduces additional, non-essential information about the antecedent by specifying what action or response is needed or appropriate. Ludwig confirms this function by providing various examples where "which calls for" introduces clauses adding detail.
Frequent in
News & Media
42%
Science
41%
Formal & Business
9%
Less common in
Wiki
3%
Encyclopedias
0%
Reference
0%
Ludwig's WRAP-UP
In summary, "which calls for" is a versatile phrase used to introduce a clause specifying a required action or response, most commonly found in News & Media and Science contexts. As Ludwig AI confirms, the phrase is grammatically correct and functions as a nonrestrictive relative clause, adding extra detail to the sentence. When using "which calls for", ensure clarity and proper clause structure. Alternatives like "that requires" and "that necessitates" can provide similar meanings with slight shifts in emphasis, and don't use it on essential clauses. Overall, mastering "which calls for" enhances precision and sophistication in writing.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
that requires
Directly substitutes "calls for" with a synonym indicating necessity.
which necessitates
A slightly more formal and direct replacement of the original phrase.
that demands
Emphasizes a strong need or expectation.
that necessitates
Replaces "calls for" with a more formal term indicating requirement.
that entails
Highlights that something involves or includes a specific consequence or condition.
that prompts the need for
Suggests that something initiates or encourages a requirement.
that leads to
Focuses on the result or outcome that necessitates a particular response.
that gives rise to the need for
Expresses the cause-and-effect relationship leading to a requirement, more verbose.
that justifies
Indicates that something provides a valid reason or basis for a certain action.
that underpins the necessity of
A more formal alternative emphasizing foundational support for the need.
FAQs
How can I use "which calls for" in a sentence?
Use "which calls for" to introduce a clause that explains what is needed or required in a particular situation. For example, "The new regulation, "which calls for" stricter environmental controls, will be implemented next year."
What are some alternatives to "which calls for"?
You can use alternatives such as "that requires", "that necessitates", or "that demands" depending on the context.
Is it better to use "which calls for" or "that calls for"?
"Which calls for" is generally used in non-restrictive clauses, adding extra information, while "that calls for" can be used in restrictive clauses that are essential to the meaning of the sentence. However, many writers now prefer "which" in both types of clauses.
What's the difference between "which calls for" and "which requires"?
While similar, "which requires" tends to emphasize a need that must be met, whereas ""which calls for"" can also imply a recommendation or suggestion, not just a strict necessity.
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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