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
is challenged
Grammar usage guide and real-world examplesUSAGE SUMMARY
"is challenged" is a valid and usable phrase in written English.
You can use it when you want to express that something is being disputed or that it is being put to the test. For example, "The teacher's authority is challenged by the students' refusal to obey the rules."
✓ Grammatically correct
News & Media
Science
Academia
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
60 human-written examples
When this is challenged, they feel threatened.
News & Media
Any adverse finding is challenged.
News & Media
Everything you think you understand is challenged.
News & Media
"Every source is challenged," McConnell said.
News & Media
It is "challenged" but not "in crisis".
News & Media
But here, every sense is challenged.
News & Media
Military readiness is challenged by restrictions on operations.
Considering climate change only as problematic is challenged as unidimensional.
Academia
The implementation of rehabilitation algorithms is challenged by actuator dynamics.
Science
Today, America's vigor is challenged on two fronts.
News & Media
Even the romantic fantasy of nature's essential goodness is challenged.
News & Media
Expert writing Tips
Best practice
Use "is challenged" to indicate that a statement, idea, or concept is being questioned or faces opposition. This phrasing is suitable for formal and academic writing.
Common error
Avoid using "is challenged" excessively in casual conversation or informal writing. Opt for simpler alternatives like "questioned" or "disputed" for a more natural tone.
Source & Trust
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "is challenged" functions as a passive voice construction, indicating that the subject is receiving the action of being challenged. Ludwig AI confirms its validity. The examples show it applying to assumptions, theories, and even personal qualities.
Frequent in
News & Media
48%
Science
33%
Academia
8%
Less common in
Wiki
3%
Formal & Business
3%
Reference
2%
Ludwig's WRAP-UP
The phrase "is challenged" is a versatile and widely used expression that indicates something is being questioned, disputed, or tested. Ludwig AI validates its grammatical correctness and common usage across various domains. As the analysis shows, it frequently appears in news articles, scientific publications, and academic discussions, highlighting its suitability for formal and neutral contexts. While alternatives like "is questioned" or "is contested" exist, "is challenged" provides a nuanced way to convey that something faces opposition or scrutiny. Remember to consider the context and audience when choosing this phrase to ensure clarity and appropriateness in your writing.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
is questioned
Focuses on the act of doubting or disputing something.
is contested
Highlights the act of actively fighting against or disputing something.
is disputed
Emphasizes disagreement or argument about something.
is put to the test
Implies that something is being evaluated for its strength or reliability.
is called into question
Suggests that the validity or truth of something is being doubted.
is undermined
Highlights the weakening or damaging of something.
is faced with
Focuses on encountering difficulties or opposition.
is confronted with
Emphasizes a direct encounter with something challenging.
is up against
Suggests being in opposition to something difficult.
is subject to scrutiny
Implies that something is being carefully examined and evaluated.
FAQs
How can I use "is challenged" in a sentence?
You can use "is challenged" to indicate that something is being questioned or faces opposition, such as "The accuracy of the data "is challenged" by recent findings".
What are some alternatives to "is challenged"?
Alternatives include "is questioned", "is disputed", or "is contested", depending on the specific context and nuance you want to convey.
Is it correct to say "is challenge" instead of "is challenged"?
No, "is challenge" is grammatically incorrect. The correct form is "is challenged", which uses the passive voice to indicate that something is being subjected to a challenge.
What's the difference between "is challenged" and "is confronted"?
"Is challenged" implies that something is being questioned or disputed, while "is confronted" suggests facing a direct problem or obstacle. For example, a theory "is challenged" by new evidence, while a company "is confronted" with financial difficulties.
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
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested