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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
erratic speed
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "erratic speed" is correct and usable in written English.
It can be used to describe something that is moving or occurring at an unpredictable or inconsistent pace. Example: "The car was traveling at an erratic speed, swerving between lanes and causing concern for other drivers."
✓ Grammatically correct
Driving
Wind energy
General descriptions
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
1 human-written examples
OROS MPH resulted in less time driving off the road, fewer instances of speeding, less erratic speed control and less inappropriate use of brakes when compared with placebo.
Human-verified similar examples from authoritative sources
Similar Expressions
59 human-written examples
In order to improve the power at erratic wind speed regime wind generator equipped with continuous variable transmission (CVT) was proposed.
The first ceiling fans were hand-operated--usually by servants--and were conspicuous for their somewhat-erratic, low-speed operation.
News & Media
With the Cubs his outfield playing was erratic, and his speed on the bases was unproductive; when he went into a hitting slump in 1964 (.251 in 52 games), he was traded to the St . Louis Cardinals where he hit.348 for the rest of the season (.315 in all).
Encyclopedias
There are many breathalyzers around to try and nab the drunk drivers but it pays to be alert to any erratic driving or speeding and give such drivers wide berth.
Wiki
"His speed was erratic".
News & Media
"We see high speed and erratic behavior -- zooming in front of them and stopping in front of them".
News & Media
This proves that these models cannot predict erratic data like wind speed efficiently.
The prediction error was highest during onset of monsoon when wind speed is erratic and as less as 6.7%% during spring when wind speed is reasonably consistent.
None of the tests involved a Scud, a target that is particularly difficult to hit because of its high speed and erratic flight path.
News & Media
Impatient with the slow speed and erratic character of the drift, after 18 months Nansen and a chosen companion, Hjalmar Johansen, left the ship with a team of dogs and sledges and made for the pole.
Wiki
Expert writing Tips
Best practice
When describing motion, specify the cause of the "erratic speed" to provide a clearer picture. For example, "The car's erratic speed was due to icy road conditions."
Common error
Avoid simply stating "erratic speed" without explaining the underlying reason. This can leave the reader wondering why the speed is irregular and whether it's due to a mechanical issue, environmental factors, or driver behavior.
Source & Trust
85%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "erratic speed" functions as a noun phrase, where "erratic" modifies the noun "speed". It serves to describe the nature of the speed, indicating its irregularity or unpredictability. Ludwig AI confirms its usability in English.
Frequent in
News & Media
34%
Science
30%
Wiki
12%
Less common in
Encyclopedias
6%
Academia
6%
Formal & Business
0%
Ludwig's WRAP-UP
The phrase "erratic speed" effectively describes an unpredictable or inconsistent pace, often in the context of motion, as determined by Ludwig. It's grammatically correct and serves to highlight irregularities, but lacks frequency in occurence. Usage spans across various domains, including news, science, and general descriptions. While not as widespread as simpler alternatives, "erratic speed" provides nuance when emphasizing instability or unpredictability. Remember to be clear about the cause and choose synonyms like "inconsistent velocity" if a simpler term is more fitting.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
inconsistent velocity
Replaces "speed" with "velocity" and "erratic" with "inconsistent", emphasizing a lack of uniformity.
uneven velocity
Highlights the lack of uniformity using "uneven" to describe the velocity.
irregular pace
Substitutes "speed" with "pace" and "erratic" with "irregular", highlighting a deviation from a normal rhythm.
unpredictable pace
Emphasizes the inability to foresee the speed, using "unpredictable".
fluctuating rate
Emphasizes the changing nature of the speed by using "fluctuating", indicating rises and falls in speed.
wavering speed
Suggests the speed is unsteady and fluctuating using "wavering".
unstable tempo
Replaces "speed" with "tempo", often used in the context of music or timing, and "erratic" with "unstable", suggesting a lack of steadiness.
fitful speed
Highlights intermittent and irregular bursts of speed using "fitful".
sporadic acceleration
Focuses on the acceleration aspect, describing it as sporadic, meaning it occurs at irregular intervals.
variable momentum
Uses "momentum" instead of "speed", implying the quantity of motion is changing unpredictably.
FAQs
How can I describe "erratic speed" in simpler terms?
You can use phrases like "inconsistent speed", "unpredictable speed", or "irregular pace" to convey the same meaning. For example, instead of "The vehicle exhibited an erratic speed", you could say "The vehicle had an "inconsistent speed"".
What situations is "erratic speed" commonly used to describe?
The phrase "erratic speed" is frequently used to describe the movement of vehicles, wind patterns, or any object whose velocity changes unexpectedly and irregularly. Think of a car swerving, a storm's changing pace, or a machine with an "unstable tempo".
Is it correct to use "erratic speed" in formal writing?
Yes, "erratic speed" is appropriate for formal writing, especially when describing technical or scientific observations. However, consider the specific context and audience. If you think there could be misunderstandings, you can always use alternative formulations for increased clarity.
What's the difference between "erratic speed" and "variable speed"?
"Variable speed" simply means that the speed changes, whereas "erratic speed" implies that the changes are unpredictable, irregular, and potentially unstable. A car with cruise control set has a variable speed to maintain that speed on inclines, but a driver exhibiting "inconsistent velocity" has "erratic speed".
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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
85%
Authority and reliability
4.1/5
Expert rating
Real-world application tested