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
highly fast
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "highly fast" is not correct and is generally not used in written English.
It is redundant because "highly" and "fast" convey similar meanings of speed, making the phrase awkward. Example: "The new internet connection is highly fast, allowing for seamless streaming and browsing."
⚠ May contain grammatical issues
Science
News & Media
Alternative expressions(7)
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
2 human-written examples
It took many repeats for the system to de-adapt from the highly fast and curved motions and to recover the invariant.
The structure of the paradigm was A-B-A', where A represented the automated straight reaching block, B was the block of curved reaches around obstacles and A' was the last block of straight reaches after exposure to many highly fast and curved OB-avoidance-motion repeats.
Human-verified similar examples from authoritative sources
Similar Expressions
57 human-written examples
Therefore, heat removal capacity is also a key issue for highly exothermic and extremely fast reactions in macroreactors.
Science
And in the highly competitive fast food industry, comparatively speaking, the Big Mac isn't even really that big any more.
News & Media
Within these systems one of our dominant species is Moringa, a highly nutritious, fast growing and hardy tree, particularly useful for avoiding malnutrition.
News & Media
Teaching, once the stopgap profession for English graduates, now has highly competitive fast track teaching schemes with exciting career paths for well-qualified graduates.
News & Media
Such devices must be highly reliable, fast, and secure against break-ins or corruption a cellular telephone that "freezes" in the middle of calls would not be tolerated.
Encyclopedias
Although the cricketer Ken Higgs, who has died aged 79, was a highly accomplished fast medium bowler for England, many will remember him for two record-breaking performances as a tail-end batsman.
News & Media
In recent years, chemists have developed reactions that are highly selective, fast, work in water, and create no unwanted byproducts.
Science & Research
This description supports highly organized fast transfers in this karst aquifer and a highly connected fracture network.
Science
Because of the automated marking and feedback, online tests are viewed as highly efficient, fast and reliable, making them especially useful where large numbers of students are concerned.
Expert writing Tips
Best practice
Avoid using "highly fast" in formal writing. Opt for alternatives like "extremely fast" or "very fast" for better clarity and grammatical correctness.
Common error
Resist the urge to intensify "fast" with "highly". It's akin to saying "very quickly quick", which is unnecessary. Choose a single, strong intensifier instead.
Source & Trust
80%
Authority and reliability
2.8/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "highly fast" functions as an adjective phrase intended to describe the speed of something. However, Ludwig AI indicates that it is not considered grammatically correct, as it is redundant.
Frequent in
Science
50%
News & Media
50%
Formal & Business
0%
Less common in
Encyclopedias
0%
Wiki
0%
Reference
0%
Ludwig's WRAP-UP
In summary, while the phrase "highly fast" attempts to emphasize speed, it's generally considered grammatically incorrect and redundant. As Ludwig AI points out, better alternatives like "extremely fast" or "very fast" offer clearer and more effective ways to convey the same meaning. Although examples can be found in both scientific and news contexts, opting for more standard phrasing will improve clarity and credibility, especially in formal writing. Therefore, it's best to avoid "highly fast" and choose stronger, less awkward alternatives.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
extremely fast
Replaces "highly" with "extremely" for a more emphatic tone.
very fast
Uses "very" instead of "highly", providing a simpler, more common alternative.
remarkably fast
Emphasizes the speed as being noteworthy or surprising.
exceptionally fast
Highlights the speed as being beyond the norm.
incredibly fast
Uses "incredibly" to denote a high degree of speed, bordering on unbelievable.
supremely fast
Indicates the highest possible degree of speed.
particularly fast
Emphasizes that the speed is a notable characteristic.
noticeably fast
Highlights the speed as being easily observed or detected.
decidedly fast
Indicates that the speed is unambiguously fast.
appreciably fast
Suggests that the speed is significant or considerable.
FAQs
Is "highly fast" grammatically correct?
No, "highly fast" is generally considered grammatically incorrect. It's better to use phrases like "extremely fast" or "very fast".
What are some alternatives to "highly fast"?
Instead of "highly fast", you can use alternatives such as "incredibly fast", "exceptionally fast", or "remarkably fast" depending on the specific nuance you want to convey.
Why is "highly fast" considered redundant?
"Highly" and "fast" both indicate a high degree of speed. Combining them creates redundancy, similar to saying something is "very quickly quick". Using just "fast" or pairing it with a different intensifier is more effective.
When is it appropriate to use "highly" with another adjective?
Using "highly" is appropriate when modifying adjectives that describe qualities that can exist in degrees, such as "highly effective" or "highly skilled". However, with adjectives like "fast", which already imply a high degree, it's best to choose a different intensifier or omit it altogether.
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
80%
Authority and reliability
2.8/5
Expert rating
Real-world application tested