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
a speed changing
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "a speed changing" is not correct in standard written English.
It may be intended to describe a process or action related to speed, but it lacks clarity and proper grammatical structure. Example: "The vehicle experienced a speed changing that affected its performance on the track."
⚠ May contain grammatical issues
Alternative expressions(1)
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified similar examples from authoritative sources
Similar Expressions
59 human-written examples
With engine trouble, pilots try to leave the engine at a constant speed; changing r.p.m.'s tears at a broken engine.
News & Media
These days technology is developing with an accelerated speed changing our everyday lives.
News & Media
Then they gathered speed, changing from three clogged lanes by day to streaking headlights at night.
News & Media
Kaytlynn's bike was bought on eBay for $945, but he rebuilt it for more speed — changing the rims, shifters, crank set and handlebars — while spending about $5,500.
News & Media
Conversely, for comfortable driving, the jerk experienced during speed changing must be minimum.
Science
The SVM's role is identifying the behaviours of optimal electromagnetic torque and blade pitch angle with respect to wind speed changing.
W-CVT is composed of transmission mechanism and speed changing actuator, and CATIA model is drawn to explain the component parts and working principle of W-CVT.
Science
The transmission is such a speed-changing device.
Encyclopedias
This year, his knuckleball is even better, the speeds changing, the pitch finding the strike zone more and more.
News & Media
The ultimate for speed changing is an electrical speed control, which gives you infinite variation of speed at the turn of a knob.
Wiki
Now we investigate the change of the wave speed while changing the speed and delay distributions assuming the distributions (2).
Expert writing Tips
Best practice
When describing modifications to velocity, use grammatically correct phrases such as "a change in speed" or "a speed adjustment" instead of "a speed changing."
Common error
Avoid combining a noun with a present participle when a clearer noun phrase exists. For example, instead of "a speed changing", opt for "a change in speed" which is more grammatically sound.
Source & Trust
60%
Authority and reliability
2.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "a speed changing" functions as a noun phrase attempting to describe an alteration or modification in velocity. However, it's not grammatically sound and lacks standard usage. As Ludwig AI points out, it is not correct in standard written English.
Frequent in
Science
0%
News & Media
0%
Formal & Business
0%
Less common in
Science
0%
News & Media
0%
Formal & Business
0%
Ludwig's WRAP-UP
In summary, the phrase "a speed changing" is grammatically incorrect and not recommended for use in standard written English. As confirmed by Ludwig AI, it lacks clarity and proper grammatical structure. Instead, opt for alternatives such as "a change in speed", "a speed adjustment", or restructuring the sentence to use gerund phrases like "altering the speed". Using these alternatives will ensure grammatical correctness and clarity in your writing.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
a change in speed
Replaces the noun-participle construction with a more standard noun phrase using "change" and a prepositional phrase.
a variation in speed
Substitutes "change" with "variation" to denote a difference or fluctuation in velocity.
a modification of speed
Employs "modification" to indicate an alteration or adjustment to the speed.
an alteration of speed
Uses "alteration" to convey the act of making something different in terms of speed.
a shift in speed
Replaces "changing" with "shift" to suggest a movement or transition to a different speed.
a speed adjustment
Combines "speed" with "adjustment" to refer to the act of regulating speed.
a speed alteration
Replaces "changing" with "alteration" in order to refer to a change in speed.
altering the speed
Transforms the phrase into a gerund phrase, emphasizing the action of changing speed.
modifying the speed
Transforms the phrase into a gerund phrase, emphasizing the action of modifying speed.
a transition in speed
Replaces "change" with "transition" to emphasize a shift or transformation in velocity.
FAQs
What's a grammatically correct alternative to "a speed changing"?
A more grammatically sound alternative to "a speed changing" is "a change in speed". Other options include "a speed adjustment" or "a speed alteration".
How can I describe the process of altering speed correctly?
Instead of saying "a speed changing", use phrases like "altering the speed", "modifying the speed", or "changing the speed" to describe the process of making speed adjustments.
Is "a speed changing" considered proper English?
No, "a speed changing" is not considered proper English. It's better to use "a change in speed" or similar alternatives for clarity and grammatical correctness.
When would I use "a change in speed" instead of "a speed changing"?
Use "a change in speed" in any context where you want to describe an alteration or modification in velocity. The phrase "a speed changing" is not grammatically correct and should be avoided.
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
60%
Authority and reliability
2.5/5
Expert rating
Real-world application tested