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
run out of puff
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "run out of puff" is correct and usable in written English.
It is an idiom that means to lose energy or enthusiasm and is often used in the context of physical activities as well as figuratively. For example, "I ran out of puff halfway through the race and had to slow down."
✓ Grammatically correct
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
27 human-written examples
Unfortunately, small turbochargers quickly run out of puff.
News & Media
And then, early in the second half, we'd run out of puff.
News & Media
China's turbocharged investment and export model has run out of puff.
News & Media
Having drained 40 cigarettes between them, they had finally run out of puff.
News & Media
You need to be climbing a particularly steep hill before it starts to run out of puff.
News & Media
The Welsh have played brilliantly but, like Welsh teams always seem to do, have run out of puff.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
33 human-written examples
Graphic: Running out of puff?
News & Media
Sorry.In this section Running out of puff?
News & Media
Make bankruptcy more costly, and you make entrepreneurship less attractive.In this section Running out of puff?
News & Media
In a comment reminiscent of the 1970s, he urged consumers to become "good energy savers".In this section Running out of puff?
News & Media
One of them, a Dutch firm called Van der Moolen, has seven ex-traders facing charges this week.In this section Running out of puff?
News & Media
Expert writing Tips
Best practice
Use "run out of puff" to add color to your writing when describing a situation where someone or something loses energy, enthusiasm, or effectiveness. It's more evocative than simply saying "become tired" or "lose momentum".
Common error
Avoid using "run out of puff" only in literal, physical contexts. While it can describe physical exhaustion, its strength lies in its ability to describe the loss of momentum in abstract situations, like a project or an economic trend.
Source & Trust
88%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The primary grammatical function of "run out of puff" is to act as a verb phrase, often functioning as the predicate of a clause. It describes a state of depletion or exhaustion, whether physical or figurative. As Ludwig AI suggests, it's an idiom.
Frequent in
News & Media
100%
Less common in
Science
0%
Formal & Business
0%
Encyclopedias
0%
Ludwig's WRAP-UP
In summary, "run out of puff" is an idiomatic phrase that means to lose energy, enthusiasm, or effectiveness. Ludwig AI confirms it is correct and usable in written English. It's commonly used in news and media and has a neutral to informal register. While grammatically correct, it should be used thoughtfully, considering the context and audience. Alternatives like ""lose steam"" or "become exhausted" may be more appropriate in formal settings. Ludwig's examples highlight its versatility in describing both physical and abstract scenarios.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
run out of energy
Directly refers to the depletion of physical or mental energy.
become exhausted
Describes the state of being completely drained of energy and vitality.
tire out
To become exhausted or depleted of energy.
lose steam
Implies a gradual decline in energy or momentum, similar to a machine losing power.
reach one's limit
Implies reaching the maximum capacity or endurance.
lose momentum
Suggests a decrease in forward progress or drive.
peter out
Indicates a gradual fading away or diminishing to nothing.
give out
Describes a sudden failure or cessation of function due to exhaustion.
flag
Describes a decline in vigor or interest.
lose heart
Indicates a loss of courage or enthusiasm to continue.
FAQs
How can I use "run out of puff" in a sentence?
You can use "run out of puff" to describe someone who is tired, exhausted, or has lost momentum, for example: "The economy seemed to "lose steam" and "run out of puff" after the initial boom".
What does it mean to "run out of puff"?
"Run out of puff" is an idiom that means to lose energy, enthusiasm, or the ability to continue an activity. It often implies a sense of exhaustion or depletion.
What can I say instead of "run out of puff"?
You can use alternatives like ""lose steam"", "become exhausted", or "lose momentum" depending on the specific context.
Is "run out of puff" formal or informal?
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
88%
Authority and reliability
4.5/5
Expert rating
Real-world application tested