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
declined by
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "declined by" is correct and usable in written English.
It can be used in contexts where you want to indicate that something has been rejected or refused by someone or something. Example: "The proposal was declined by the committee after careful consideration."
✓ Grammatically correct
News & Media
Science
Formal & Business
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
Manufacturing declined by 12%.
News & Media
Japan's car exports declined by 69%.
News & Media
In Japan, share prices declined by 7.5%.
News & Media
(In fact, it declined by 3.3 percent).
News & Media
Construction declined by 34,000.
News & Media
Overall phosphate production declined by the mid-1990s.
Encyclopedias
But under VP, stock declined by 89%.
News & Media
Operating income declined by $167 million, to $1.2 billion.
News & Media
Her revenues declined by 20 percent, she said.
News & Media
Production declined by one-fifth this year.
News & Media
There, employment declined by 35,000.
News & Media
Expert writing Tips
Best practice
When using "declined by", ensure the context clearly specifies what is decreasing and the magnitude of the decrease. This provides clarity and avoids ambiguity.
Common error
Avoid assuming a causal relationship simply because something "declined by" a certain amount. Always provide evidence or context to support any claims about the reasons for the decrease.
Source & Trust
82%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "declined by" functions as a verb phrase indicating a decrease or reduction in a specific quantity. It's frequently used to express negative change. Ludwig AI provides numerous examples showcasing this function.
Frequent in
News & Media
47%
Science
35%
Formal & Business
8%
Less common in
Encyclopedias
1%
Social Media
1%
Reference
0%
Ludwig's WRAP-UP
The phrase "declined by" is a versatile and frequently used construction for indicating a reduction or decrease in quantity, value, or another measurable attribute. As Ludwig AI confirms, it is grammatically correct and widely applicable across various contexts, primarily in news, scientific, and business domains. While generally considered neutral to formal, its usage demands precision, requiring clear specification of the element experiencing decline and the magnitude of said decline. Several alternative phrases exist, such as "decreased by", "reduced by", and "fell by", each carrying slight nuances in meaning and formality. When using "declined by", avoid assumptions of causality without supporting evidence.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
Decreased by
This is a direct synonym, interchangeable in many contexts, but might lack the subtle implication of a downward trend.
Reduced by
Similar to "decreased by", but suggests an active effort to lessen the quantity or value.
Fell by
Implies a more sudden or rapid decrease compared to "declined by".
Diminished by
Suggests a gradual reduction, often implying a loss of importance or quality.
Dropped by
Similar to "fell by", emphasizing a quick and noticeable decrease.
Lessened by
Indicates a reduction in degree, intensity, or amount, often used for abstract concepts.
Contracted by
Frequently used in economic contexts to describe a shrinking economy or market.
Slipped by
Implies a small or subtle decrease, often unnoticed or unintentional.
Eroded by
Suggests a gradual wearing away or decline, often over a long period.
Weakened by
Indicates a loss of strength or effectiveness, applicable to both physical and abstract entities.
FAQs
How do I use "declined by" in a sentence?
Use "declined by" to indicate a reduction or decrease in a specific quantity or value. For example, "Sales "declined by" 10% last quarter".
What are some alternatives to "declined by"?
Alternatives include "decreased by", "reduced by", "fell by", or "dropped by", depending on the nuance you want to convey.
Is it more formal to say "declined by" or "fell by"?
"Declined by" is generally considered more formal than "fell by". "Fell by" implies a sudden or rapid decrease and might be more appropriate in informal contexts, whereas "declined by" suggests a gradual decrease, and is appropriate for formal contexts like business and news.
What's the difference between "declined by" and "declined from"?
"Declined by" indicates the amount of decrease, while "declined from" indicates the starting point before the decrease. For example, "Profits "declined by" $1 million" versus "Profits "declined from" $5 million".
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
82%
Authority and reliability
4.5/5
Expert rating
Real-world application tested