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
arduous undertaking
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "arduous undertaking" is correct and usable in written English.
It can be used to describe a task or project that is very difficult and requires a lot of effort and perseverance. Example: "Climbing Mount Everest is an arduous undertaking that demands both physical and mental strength."
✓ Grammatically correct
News & Media
Encyclopedias
Science
Alternative expressions(20)
a lot of time and effort
extensive work
strenuous activity
great diligence
laborious task
complex operation
strenuous effort
laborious endeavor
high effort
significant application
demanding endeavor
considerable dedication
difficult endeavor
demanding activity
extensive dedication and work
much time and effort
demanding task
challenging task
considerable time and energy
formidable challenge
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
14 human-written examples
Stanford argues, however, it would have been a less arduous undertaking than might be expected.
News & Media
As with all of Wright's work, it has been a long and arduous undertaking.
News & Media
Jason Wood: Given its location, Far North must have been an arduous undertaking.
News & Media
It can be assumed that they were put to work on the tobacco harvest, an arduous undertaking.
Encyclopedias
Still, finding the veterans in their camps is an arduous undertaking, requiring hours of trekking through the jungle.
News & Media
Separating the wheat from the chaff in fantasy football can be an arduous undertaking, particularly when rookies are involved.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
46 human-written examples
The Irish light-bellied Brent goose's 9,000-mile 9,000-mileroute is one of the migrationous underouten by any bisd.
News & Media
Add to that the approval required for alterations, and you have an arduous, expensive undertaking.
News & Media
The riveting documentary The Man Who Skied Down Everest (1975) trails champion Japanese skier Yuichiro Miura and his team as they ascend the world's highest peak -- an arduous, perilous undertaking in itself, ultimately hoping to descend on skis -- a virtual suicide mission.
News & Media
Instead of an arduous activity undertaken by determined scholars, visiting the digital Bodleian is a pleasant browse through the virtual past that all of us can undertake.
News & Media
Travel to and in the park in those early years was arduous and undertaken by only a small number of hardy adventurers each year.
Encyclopedias
Expert writing Tips
Best practice
Use "arduous undertaking" when you want to emphasize not only the difficulty of a task, but also the commitment and effort required to see it through. It conveys a sense of seriousness and dedication.
Common error
Avoid using "arduous undertaking" to describe tasks that are only mildly challenging. The phrase is best reserved for situations that genuinely involve significant difficulty and effort.
Source & Trust
85%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "arduous undertaking" functions as a noun phrase, where 'arduous' modifies 'undertaking'. Ludwig confirms its correct and usable nature. It commonly acts as the subject or object of a sentence, describing a difficult task or endeavor.
Frequent in
News & Media
52%
Encyclopedias
14%
Science
14%
Less common in
Formal & Business
4%
Wiki
2%
Academia
2%
Ludwig's WRAP-UP
In summary, "arduous undertaking" is a grammatically sound and usable phrase that describes a task or project requiring significant effort and perseverance. Ludwig's analysis reveals it's most frequently used in news and media, encyclopedias, and scientific contexts, indicating a neutral to formal register. While not as common as simpler alternatives, it effectively conveys the magnitude of a challenge. As Ludwig AI confirms, the phrase is readily understood and applicable when you wish to highlight the commitment needed for a particularly demanding endeavor. Be mindful not to overuse it in contexts that don't warrant such emphasis.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
challenging endeavor
Replaces 'arduous' with 'challenging' and 'undertaking' with 'endeavor', both suggesting difficulty, but perhaps with a slightly less intense connotation.
difficult task
A more straightforward synonym, focusing on the difficulty of the task at hand.
laborious project
Emphasizes the effort and labor involved.
strenuous effort
Highlights the energy and exertion required.
demanding activity
Focuses on the high demands placed on the individual or team.
tough assignment
Implies a task that is not easy to complete successfully.
formidable challenge
Suggests that the task is intimidating and difficult to overcome.
onerous responsibility
Highlights the burden and weight associated with the task.
complex operation
Emphasizes the intricate and multifaceted nature of the undertaking.
Herculean task
References the mythical hero Hercules to imply extreme difficulty and effort.
FAQs
How can I use "arduous undertaking" in a sentence?
You can use "arduous undertaking" to describe a challenging project or task that requires significant effort. For example: "Completing this research paper was an "arduous undertaking"."
What are some alternatives to "arduous undertaking"?
Some alternatives include "challenging endeavor", "difficult task", or "laborious project". The best choice depends on the specific context and nuance you wish to convey.
When is it appropriate to use "arduous undertaking"?
It is appropriate to use "arduous undertaking" when describing a task or project that is genuinely difficult and requires a sustained effort over a significant period. It's best used when you want to emphasize the magnitude of the challenge.
What makes "arduous undertaking" different from "difficult task"?
"Arduous undertaking" implies a more prolonged and demanding effort than "difficult task". "Arduous" suggests a tiring and strenuous process, while "undertaking" suggests a project or endeavor of some scope. A "difficult task" might be a single, challenging activity, while an "arduous undertaking" is a complex and prolonged challenge.
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
85%
Authority and reliability
4.5/5
Expert rating
Real-world application tested