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
Dubious activities
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "Dubious activities" is correct and usable in written English.
It can be used to describe actions or behaviors that are questionable, suspicious, or not entirely honest. Example: "The investigation revealed several dubious activities that raised concerns about the company's practices."
✓ Grammatically correct
News & Media
Formal & Business
Alternative expressions(4)
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
34 human-written examples
Already, the private suits are revealing dubious activities.
News & Media
BuzzFeed News has revealed that Nebraska and Texas are also engaged in similar legally dubious activities.
News & Media
Regulators may have other tools to curb dubious activities, he said.
News & Media
It is wrong to commit burglary (see Watergate), and wrong to lie about, or try to conceal, dubious activities (ditto).
News & Media
Sen. McWhatshisname carelessly dropped a remark the other day that revealed the exact nature of his dubious activities.
News & Media
The New Yorker, July 18, 1953 P. 15 Sen. McWhatshisname carelessly dropped a remark the other day that revealed the exact nature of his dubious activities.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
26 human-written examples
Dubious activity either in-play, or on side markets.
News & Media
Then, as now, banking was a morally dubious activity.
News & Media
But talking of dubious activity, what is Dark Santa?
News & Media
But the exchange also attracted a fair share of dubious activity.
News & Media
"Posthumous psychiatric diagnosis is a dubious activity," he warns, before adding, "Madness is of an age, not for all time.
News & Media
Expert writing Tips
Best practice
Pair "dubious activities" with verbs that suggest investigation or scrutiny, such as "investigate", "scrutinize", or "uncover", to emphasize the need for closer examination.
Common error
Avoid using "dubious activities" as a vague accusation. Always provide context or examples to illustrate what makes the activities questionable. Being specific strengthens your argument and avoids ambiguity.
Source & Trust
91%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "dubious activities" functions as a noun phrase where the adjective "dubious" modifies the noun "activities". Ludwig AI indicates that it's a correct and usable phrase. It generally acts as the object of a verb or preposition, describing actions that are questionable or suspicious.
Frequent in
News & Media
65%
Formal & Business
20%
Science
15%
Less common in
Wiki
5%
Encyclopedias
0%
Reference
0%
Ludwig's WRAP-UP
In summary, the phrase "dubious activities" is a grammatically correct and usable term, as affirmed by Ludwig AI, to describe actions that are questionable, suspicious, or not entirely honest. While not as common as other similar phrases, it appears frequently in news and media, as well as formal business contexts. When using the phrase, it is important to provide sufficient context and details to clarify the reasons behind the suspicion. Alternatives such as "questionable actions" or "suspicious behavior" can be used depending on the nuance you wish to convey. Always strive for specificity to avoid vagueness and ensure your message is clear and impactful.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
Questionable actions
Focuses on the element of doubt and uncertainty surrounding the actions.
Suspicious behavior
Highlights the element of mistrust and potential wrongdoing in the behavior.
Shady dealings
Emphasizes the secretive and potentially illegal nature of the transactions.
Fishy practices
Suggests something is not right or trustworthy about the practices.
Unethical conduct
Focuses specifically on the violation of moral principles in the conduct.
Illicit operations
Implies illegal and clandestine actions are taking place.
Corrupt practices
Highlights the element of bribery and abuse of power.
Improper conduct
Suggests a violation of established rules and norms of behavior.
Controversial actions
Focuses on the element of public disagreement and debate surrounding the actions.
Irregular operations
Suggests a deviation from standard or accepted procedures.
FAQs
How can I use "dubious activities" in a sentence?
You can use "dubious activities" to describe actions that are questionable or suspicious. For example, "The investigation revealed several "dubious activities" within the company's financial records."
What's the difference between "dubious activities" and "illegal activities"?
"Dubious activities" suggests that something is questionable or suspicious, but not necessarily illegal. "Illegal activities", on the other hand, explicitly refers to actions that violate the law.
What can I say instead of "dubious activities"?
You can use alternatives like "questionable actions", "suspicious behavior", or "shady dealings" depending on the specific context.
Are "dubious activities" always related to illegal actions?
No, "dubious activities" are not always illegal. They can also refer to actions that are unethical, morally questionable, or simply suspicious without necessarily breaking the law.
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
91%
Authority and reliability
4.5/5
Expert rating
Real-world application tested