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
that was efficient
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "that was efficient" is correct and usable in written English.
You can use it to describe a process, action, or method that was effective and accomplished in a timely manner. Example: "The meeting was brief and to the point; that was efficient."
✓ Grammatically correct
News & Media
Science
Academia
Alternative expressions(3)
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
16 human-written examples
When has the government ever delivered a product that was efficient, caring and timely?
News & Media
When Jeffrey Immelt became GE's CEO, in 2001, he inherited a company that was efficient but facing intense competition and falling prices for its top-tier capital goods.
News & Media
In 1862 they built a crude plant at Heleneborg, Sweden; Alfred, a chemist, was basically responsible for the design of this factory that was efficient and relatively safe considering the state of knowledge of the times.
Encyclopedias
Justice Chan's ruling, made public on Tuesday, hinged on the question of whether the city had broken its obligation to recycle the used containers, as long as it could do so in a way that was efficient and environmentally effective.
News & Media
My husband and I built our house in New York about five years ago, and right before we began, I fell under the spell of the small-house movement; I had dozens of Post-Its in my copy of "The Not-So-Big HouSarah Susankauthor Sarah Susanka's recommendations for designing a house that was efficient and inviting without being pointlessly gigantic.
News & Media
E-mail address GO SIGN UP Share Tweet My husband and I built our house in New York about five years ago, and right before we began, I fell under the spell of the small-house movement; I had dozens of Post-Its in my copy of "The Not-So-Big Not-So-Big Not-So-Big House Susanka's recomarkingions for designing authore that waSarah Susankand inviting without being pointlessly gigantic.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
44 human-written examples
Creatively the rolling format makes for a shorthand that's efficient and helpful, Michael said.
News & Media
With Whiteside, the Heat offense swells — creating a half-court attack that is efficient and sustainable.
News & Media
His focus is on algorithms and models that are efficient, accurate, and yield compact models.
Academia
These applications require the design of single guide RNAs (sgRNAs) that are efficient and specific.
Academia
Applied broadly, investors can use the M2 technique to select funds that are efficient risk-takers.
News & Media
Expert writing Tips
Best practice
Use "that was efficient" when you want to highlight that a process, method, or action achieved its purpose with minimal waste of time, resources, or effort.
Common error
While grammatically sound, "that was efficient" can sometimes sound too casual or understated in highly formal settings. In such cases, consider using alternatives like "that was highly effective" or "that was particularly resourceful" to maintain the appropriate tone.
Source & Trust
89%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "that was efficient" primarily functions as a comment or observation about a preceding action, process, or method. It serves to evaluate its effectiveness in terms of resource utilization and achieving the desired outcome. As Ludwig highlights, it is considered grammatically correct.
Frequent in
News & Media
40%
Science
30%
Academia
15%
Less common in
Encyclopedias
5%
Wiki
5%
Formal & Business
5%
Ludwig's WRAP-UP
The phrase "that was efficient" is a grammatically correct and usable expression in English, as confirmed by Ludwig. It serves to express approval or recognition of something that has been done effectively and with minimal waste. While its register is generally neutral, it is important to consider the context and use more formal alternatives when appropriate. Common alternatives to "that was efficient" include "that was effective" and "that was productive". Remember to highlight efficient resource management when choosing to use "that was efficient".
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
that was effective
Focuses more on achieving the desired result, while "that was efficient" highlights resourcefulness.
that was productive
Emphasizes the generation of output or results, rather than just streamlined action.
that was streamlined
Highlights the smooth and optimized nature of the process, with less emphasis on the outcome itself.
that was well-organized
Focuses on the orderliness of the approach, not necessarily the speed or resource conservation.
that was resourceful
Highlights the ability to find and use available resources smartly, which may imply efficiency.
that was time-saving
Explicitly emphasizes the reduction in time taken.
that was economical
Highlights cost-effectiveness and frugality.
that was expeditious
Implies speed and promptness in completion. More formal.
that was optimized
Focuses on achieving the best possible outcome given the constraints
that was slick
Emphasizes the speed and ease of the action
FAQs
How can I use "that was efficient" in a sentence?
You can use "that was efficient" to describe a process, action, or method that was effective and accomplished in a timely manner. For example, "The meeting was brief and to the point; that was efficient."
What can I say instead of "that was efficient"?
You can use alternatives like "that was effective", "that was productive", or "that was streamlined" depending on the context.
Is "that was efficient" grammatically correct?
Yes, "that was efficient" is grammatically correct. It follows standard English sentence structure and is widely used in both spoken and written communication.
When is it appropriate to use "that was efficient"?
It is appropriate to use "that was efficient" when you want to commend something for being effective and saving time or resources. In formal settings, consider more sophisticated alternatives to maintain an appropriate tone.
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
89%
Authority and reliability
4.1/5
Expert rating
Real-world application tested