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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
have been perfected
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "have been perfected" is correct and usable in written English.
It can be used to indicate that something has undergone a process of improvement or refinement over time. Example: "The techniques for this craft have been perfected over generations, resulting in exceptional quality."
✓ Grammatically correct
News & Media
Academia
Science
Alternative expressions(5)
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
36 human-written examples
The two assignments, if both have been perfected, rank "according to priority in time of filing or perfection," whichever is earlier, "provided that there is no period thereafter when there is neither filing nor perfection" (§9-312 5)(a)).
Academia
Many wares are handmade in villages where lacquer and bamboo techniques have been perfected over centuries.
News & Media
In the course of time in various places special poetic forms have been perfected and passed on from bard to bard.
Encyclopedias
That may have been perfected early in his career when he worked in politics as an aide to elected Democratic officials in New York.
News & Media
Today by contrast the arms have been perfected to the point that a citizen, your neighbor next door, can easily kill at a rate of 100 people per minute.
To that end, Estrela is trying to exploit a range of genetic manipulations in the new species that have been perfected in the current workhorse, including the use of the powerful new CRISPR gene editing technology.
Human-verified similar examples from authoritative sources
Similar Expressions
24 human-written examples
It has been perfected.
News & Media
By 2005, it had been perfected.
News & Media
And now the form has been perfected with Atlanta.
News & Media
Some, like waterboarding, had been perfected during the Spanish Inquisition.
News & Media
Once this has been perfected, it will look very impressive.
Wiki
Expert writing Tips
Best practice
Use "have been perfected" to describe processes, techniques, or skills that have undergone significant refinement and improvement over time.
Common error
Avoid using "have been perfected" to describe everyday tasks or items that do not require significant skill or effort. Using it in such contexts can sound hyperbolic or unnatural.
Source & Trust
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "have been perfected" functions as a passive perfect construction, typically used to describe an action that was completed at some point in the past and resulted in a current state of refinement or high quality. According to Ludwig AI, the phrase is valid and usable. For instance, "Many wares are handmade in villages where lacquer and bamboo techniques have been perfected over centuries."
Frequent in
News & Media
50%
Academia
23%
Science
27%
Less common in
Formal & Business
0%
Encyclopedias
0%
Wiki
0%
Ludwig's WRAP-UP
The phrase "have been perfected" is a common and grammatically correct expression used to indicate that something has reached a high level of refinement through a process of improvement. As Ludwig AI confirms, the phrase is suitable for use in various contexts, particularly in news media, academia, and science. It emphasizes the culmination of effort and the attainment of quality. While versatile, it's best reserved for subjects that genuinely warrant the description of having undergone significant refinement, avoiding overuse in trivial contexts. Alternatives like "have been refined" or "have been mastered" can offer nuanced variations in meaning.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
have been refined
Emphasizes the process of improvement through careful adjustment.
have reached their peak
Focuses on reaching the highest point of development or quality.
have been honed
Suggests a process of sharpening or focusing something for optimal performance.
have been polished
Highlights the removal of flaws and the addition of smoothness and elegance.
have been optimized
Implies that something has been adjusted to achieve the best possible outcome or efficiency.
have been mastered
Indicates a high level of skill or expertise in something.
have been streamlined
Focuses on making something more efficient and effective by removing unnecessary elements.
have achieved excellence
Highlights the attainment of a superior level of quality or performance.
have been brought to fruition
Emphasizes the successful completion and realization of something.
have been consummated
Focuses on completeness, finishing the last step of a process.
FAQs
How can I use "have been perfected" in a sentence?
The phrase "have been perfected" is used to describe something that has reached a state of high quality or efficiency through repeated improvements. For example, "The techniques "have been perfected" over many years" or "Their recipes "have been perfected" since the 1940s".
What are some alternatives to "have been perfected"?
Similar phrases include "have been refined", "have been mastered", or "have been honed". The choice depends on the specific nuance you want to convey.
Is it better to say "has been perfected" or "have been perfected"?
"Has been perfected" is used with singular subjects, while "have been perfected" is used with plural subjects. For example, "The technique has been perfected" versus "The techniques have been perfected".
What does it mean when something is described as "having been perfected"?
It implies that the item, method, or skill has undergone a series of improvements and refinements, reaching a state of high quality, efficiency, or effectiveness. This often suggests a long period of development or dedicated effort to achieve the best possible outcome.
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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
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested