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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
four times less
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "four times less" is often considered incorrect and can lead to confusion in written English.
It is typically used when comparing quantities, but it can be misleading because it implies a mathematical operation that is not clearly defined. Example: "If the original price was $100, then four times less would suggest a price of $25, which is not accurate."
Science
News & Media
Formal & Business
Alternative expressions(2)
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 the United States, women kill themselves about four times less often than men.
News & Media
But company financial reports show that American providers are four times less profitable than their European counterparts.
News & Media
In fact, they are four times less likely to have finished high school than the average person born in America.
News & Media
"We were getting three or four times less revenue for each point of ratings than other channels," says Mr Remchukov.
News & Media
But that's not good enough for younger folk - 16-24s are four times less likely to do that.
News & Media
Argentines pay four times less for electricity than their neighbours in Brazil, while the government subsidised the costs of energy firms by more than $10 billion in 2011.
News & Media
It is growing at about 6% a year, while inflation is down to single figures, about four times less than the rate in 2000.
News & Media
"If you look at the data, compared with Europe or Canada, Americans are eating two to four times less yogurt," he told me.
News & Media
Those prices are two to four times less than the industry standard.
News & Media
Those prices are two to four times less than the industry standard.
News & Media
Gabriel et al. reported the vaginal wall being four times less stiff than abdominal aponeurosis.
Science
Expert writing Tips
Best practice
In less formal contexts, "four times less" is generally understood, but be mindful of your audience and the potential for misinterpretation.
Common error
Avoid assuming "four times less" means subtracting four times the original value. It usually means reducing something to one-fourth of its original value. For example, if you misinterpreted it to mean subtracting, starting from 100 you will end up with -300, while the correct answer should be 25.
Source & Trust
84%
Authority and reliability
3.9/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "four times less" typically functions as an adverbial modifier, indicating the degree to which a quantity or value is reduced. Ludwig examples show it comparing values across various contexts.
Frequent in
Science
50%
News & Media
44%
Wiki
4%
Less common in
Formal & Business
2%
Encyclopedias
0%
Reference
0%
Ludwig's WRAP-UP
The phrase "four times less" is a common way to express a significant reduction in quantity. Ludwig reveals the debate around its grammatical correctness, with alternatives like "one-quarter of" or "75% less than" suggested for clarity. Despite this debate, its widespread use across science, news, and media signifies its acceptance in various contexts. When choosing between "four times less" and its alternatives, consider your audience and prioritize clarity to avoid potential misinterpretations. The main takeaway is that while it can be understood, it introduces a degree of ambiguity.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
one-quarter the amount
Expresses a direct fractional relationship, indicating a reduction to a quarter of the original quantity.
a quarter of the original
States that something is now just a quarter of what it initially was.
a fourth of what it was
Similar to 'one-quarter', but uses the ordinal 'fourth'.
reduced by seventy-five percent
Focuses on the percentage reduction, emphasizing the extent of the decrease.
three-quarters less
Highlights that three-quarters have been removed.
seventy-five percent smaller
Highlights the size difference, quantifying the reduction as a percentage.
decreased to twenty-five percent
Indicates the final percentage remaining after the decrease.
cut by seventy-five percent
Focuses on the action of cutting or reducing, quantifying it by percentage.
only twenty-five percent remains
Emphasizes that only a small portion is left after the reduction.
twenty-five percent as much
Specifies the final amount relative to the original.
FAQs
Is "four times less" grammatically correct?
The phrase "four times less" is often debated. While commonly used, some argue it's imprecise and suggest alternatives like "one-quarter of" or "75% less than" for clarity.
What does "four times less" actually mean?
In most contexts, "four times less" means that a quantity has been reduced to one-fourth of its original value. For example, if something originally cost $100, "four times less" would imply a new cost of $25.
Are there clearer alternatives to "four times less"?
Yes, phrases like "one-quarter of", "75% less than", or "reduced by 75%" can often provide more precise communication.
When is it appropriate to use "four times less"?
While not always considered grammatically perfect, "four times less" is generally acceptable in informal contexts where the meaning is clear from the surrounding information. In formal or technical writing, using more precise alternatives is recommended.
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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
3.9/5
Expert rating
Real-world application tested