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
fire speed
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase 'fire speed' is not correct and usable in written English.
It is not a proper noun or idiom, so you can't use it in written English. If you are trying to express the idea of something happening quickly, you can say, "The fire spread at an alarming speed".
⚠ May contain grammatical issues
News & Media
Wiki
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
3 human-written examples
When someone calls to report a fire, speed, precision and clarity can save lives.
News & Media
In the land of rapid fire speed bags, jumping rope and fighters hitting punching bags, something click inside him.
News & Media
The ERC scale (Energy Release Component) relates fuel energy potential to an area, the Burning Index measures flame length against fire speed and temperature, the Haines index relies on stability and air humidity, and the Keeth-Byrun Drought Index works in the abstract, taking in a fuel's likelihood to burn and at what percentage.[1].
Wiki
Human-verified similar examples from authoritative sources
Similar Expressions
55 human-written examples
When ignited, these works send lines of fire speeding through landscapes like flaming snakes.
News & Media
"It's less about technology and more about what the visitor can bring to the equation," said Ms. Bernstein, 37, a pixieish woman who answers questions at a rapid-fire speed.
News & Media
While Thomas Paulucci, the crew chief, admires the party scene and Mr. Fuller the rapid-fire speed of the scene changes, Mr. Larson finds pleasure in something more straightforward.
News & Media
True, "Plan to B" does not use toe shoes, but the rapid-fire speed and dynamics that give his ballet a contemporary look owe everything to his fluency with the ballet vocabulary.
News & Media
The instantaneous firing speed (IFS) (v_j) [1, 2, 3] appertains to each continuous transition (T_j in T_c).
There are many pluses to the inventive "Hamilton," including inspired choreography and an energized cast, expertly directed by Thomas Kail, that smartly delivers lyrics at rapid-fire speed.
News & Media
That's why I was hesitant to take part in a rapid-fire speed dating session with a bunch of strangers and no wingmen to cover up my constant blunders with ladies.
News & Media
These upgrades are used to customize ships with improvements, such as increased firing speed or heavier rear armor.
Wiki
Expert writing Tips
Best practice
When discussing the rate at which a fire spreads, consider using more precise terms like "fire propagation rate" or "burning velocity".
Common error
Avoid using "fire speed" in scientific or technical writing. Instead, opt for established terms such as "rate of fire" or "fire propagation rate" to maintain clarity and precision.
Source & Trust
83%
Authority and reliability
2.8/5
Expert rating
Real-world application tested
Linguistic Context
Grammatically, the phrase "fire speed" functions as a noun phrase, although its usage is questionable. According to Ludwig AI, the phrase is not correct and usable in written English. However, examples show it is used, albeit infrequently, to describe the velocity of a fire.
Frequent in
News & Media
33.33%
Wiki
33.33%
Science
33.33%
Less common in
Formal & Business
0%
Academia
0%
Encyclopedias
0%
Ludwig's WRAP-UP
In summary, while the phrase "fire speed" is used to describe the velocity of a fire, Ludwig AI identifies it as grammatically incorrect. More precise and accepted terms such as "rate of fire", "fire propagation rate", or "burning velocity" are recommended for clarity, especially in formal contexts. While the phrase appears across various sources, consider the audience and purpose when choosing the most appropriate terminology.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
rate of fire
Focuses specifically on how quickly something fires or discharges.
fire propagation rate
Specifically describes how quickly a fire spreads.
speed of flames
Describes the velocity at which flames move.
burning velocity
Technical term for the rate at which a flame front advances.
rapid burning
Emphasizes the quickness of combustion.
high-speed combustion
Highlights the velocity of the burning process.
fast ignition
Highlights how quickly something starts burning.
accelerated fire spread
Indicates an increase in the rate at which a fire is expanding.
quick conflagration
Implies a fast-developing and large fire.
rapid combustion
Emphasizes the speed of the combustion process.
FAQs
How can I describe the rate at which a fire spreads?
Instead of "fire speed", consider using more accurate terms like "fire propagation rate" or "burning velocity".
What's a more accurate way to talk about how fast something burns?
Use phrases such as "rate of fire", "rapid combustion", or "accelerated fire spread" instead of "fire speed".
Is "fire speed" grammatically correct?
The phrase "fire speed" is not considered grammatically correct in standard English. It's better to use established terms like "fire propagation rate" or rephrase your sentence for clarity.
In what contexts is it appropriate to use "fire speed"?
While not technically correct, "fire speed" might be understood in informal contexts. However, for professional or scientific communication, it's crucial to use precise and accepted terminology like "burning velocity".
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
83%
Authority and reliability
2.8/5
Expert rating
Real-world application tested