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 interval
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "arduous interval" is correct and usable in written English.
It can be used to describe a challenging or difficult period of time that one must endure or navigate through. Example: "After an arduous interval of training, the athletes finally felt prepared for the competition."
✓ Grammatically correct
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified similar examples from authoritative sources
Similar Expressions
60 human-written examples
For long, arduous sections of work, allow them a break at regular intervals.
Wiki
— far more arduous.
News & Media
The conditions were arduous.
News & Media
Second, clinical trials are arduous.
News & Media
The work is arduous.
News & Media
"It was pretty arduous," she said.
News & Media
His start Saturday was considerably more arduous.
News & Media
"But it is arduous".
News & Media
Economists 12. Arduous 13.
News & Media
That proved arduous.
News & Media
Oh, nothing too arduous.
News & Media
Expert writing Tips
Best practice
When using "arduous interval", ensure the context clearly establishes what makes the interval difficult or challenging. Provide specific details to enhance the reader's understanding.
Common error
Avoid using "arduous interval" when simpler phrases like "difficult time" or "challenging period" would suffice. The phrase is best reserved for situations involving significant effort or hardship.
Source & Trust
60%
Authority and reliability
3.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "arduous interval" functions as an adjectival phrase modifying a noun. "Arduous" describes the nature of the "interval", indicating a period characterized by difficulty and requiring significant effort. Ludwig AI confirms its grammatical correctness.
Frequent in
Science
0%
News & Media
0%
Formal & Business
0%
Less common in
Science
0%
News & Media
0%
Formal & Business
0%
Ludwig's WRAP-UP
In summary, "arduous interval" is a grammatically sound phrase that describes a particularly challenging period. While confirmed as correct by Ludwig AI, its usage is rare. The phrase conveys a sense of difficulty and requiring significant effort during the specified period. For alternatives, consider "challenging phase" or "difficult period". Due to its formal tone, "arduous interval" may be more appropriate in professional or academic contexts than in casual conversation. Remember to provide context when using "arduous interval" to clarify the specific challenges involved.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
challenging phase
Emphasizes the difficulty aspect, similar to "arduous", while "phase" is a more neutral term for "interval".
difficult period
Replaces "arduous" with a common synonym and "interval" with a more general term.
trying time
Focuses on the stressful or testing nature of the interval.
grueling stretch
Highlights the exhausting aspect of the interval.
demanding period
Emphasizes the high requirements and effort needed during the interval.
testing phase
Focuses on the challenging aspect that puts one's abilities to the test.
rigorous period
Highlights the strictness and thoroughness required during the interval.
laborious phase
Focuses on the effort and hard work involved.
strenuous time
Emphasizes the physically or mentally taxing nature of the interval.
taxing period
Highlights the draining and demanding qualities of the interval.
FAQs
How can I use "arduous interval" in a sentence?
While "arduous interval" is grammatically correct, it's not commonly used. Consider it for describing a particularly difficult or challenging period, for instance, "After an "arduous interval" of training, the team was ready for the championship".
What are some alternatives to "arduous interval"?
Alternatives include "challenging phase", "difficult period", or "trying time". The best choice depends on the specific context and the nuance you wish to convey.
Is "arduous interval" formal or informal?
"Arduous interval" leans towards a more formal tone due to the word "arduous". In informal settings, simpler phrases like "tough time" might be more appropriate.
What makes "arduous interval" different from "difficult time"?
"Arduous" implies a greater degree of difficulty and effort than "difficult". Therefore, "arduous interval" suggests a period that is not just challenging, but also requires significant exertion and endurance compared to a "difficult time".
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
60%
Authority and reliability
3.5/5
Expert rating
Real-world application tested