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
Grammar usage guide and real-world examplesUSAGE SUMMARY
"dubious" is a correct and usable word in written English.
You can use "dubious" to describe something that you are uncertain about or something that seems unlikely. It implies doubt. Example sentence: He had a dubious expression on his face when she suggested the plan.
✓ Grammatically correct
News & Media
Formal & Business
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
Neither will Ben Bernanke, the current chairman of the Fed, whose term ends in January and who earlier pleaded a dubious "scheduling conflict".
News & Media
Collins said a picture was emerging of Savile as a risk-taker and an opportunist who surrounded himself with dubious characters.
News & Media
"There is a risk that an all-or-nothing approach and the highlighting of dubious cases to prominent news outlets and journalists will preclude legitimate claims from being fairly treated.
News & Media
"[Social services minister] Scott Morrison's claims around the impact of his child care changes to workforce participation are dubious at best," acting shadow early childhood minister Jenny Macklin said.
News & Media
But walk away from the cafes churning out chalga (Bulgaria's dubious gift to pop music), and as the buildings thin out there is no one but yoga enthusiasts and naked men playing chess.
News & Media
The methodology behind this claim was also dubious as it derived from a 2002 study that extrapolated from the number of cameras spotted on two streets in Wandsworth in London.
News & Media
Dubious parenting: the opposite, as Elena tells him: "If I'd known you were gonna grow up to be a grown-up... " Steady on seven.
News & Media
Cameron's mandate among the UK's "family of nations" – to use his own term from the Scottish independence referendum campaign – is dubious at best.
News & Media
Fellow Iona patron Professor Patricia Casey was publicly rebuked on two separate occasions last year for misusing research from both Uppsala University and UNICEF to reach the same dubious conclusion, prompting UNICEF Ireland's executive director Melanie Verwoerd to slam Casey's spin as "incorrect and unacceptable".
News & Media
Although the state of the economy remains difficult to ascertain beyond dubious official figures, huge sums are lost to corruption.
News & Media
The Labour belief that Ukip is causing disproportionate damage to the Conservatives looks increasingly dubious.
News & Media
Expert writing Tips
Best practice
Use "dubious" to express a sense of uncertainty or skepticism towards a claim, action, or situation. It implies a lack of conviction or belief in something's truth or reliability.
Common error
Avoid relying too heavily on the word "dubious" in academic or professional contexts. While it's acceptable, consider stronger synonyms like "questionable" or "uncertain" to convey a more precise level of skepticism or doubt.
Source & Trust
94%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The primary grammatical function of "dubious" is as an adjective. It modifies nouns to indicate that something is questionable, uncertain, or not to be relied upon. Ludwig examples show its use in describing claims, practices, and distinctions.
Frequent in
News & Media
88%
Formal & Business
6%
Science
6%
Less common in
Encyclopedias
0%
Wiki
0%
Reference
0%
Ludwig's WRAP-UP
In summary, "dubious" functions as an adjective used to express skepticism or uncertainty about something's truth or reliability. Ludwig AI shows that it appears most commonly in News & Media sources. While generally considered grammatically correct, careful consideration of context and stronger synonyms might be necessary for certain writing styles. When you aim to convey a sense of doubt, suspicion or question, consider using "dubious".
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
questionable
Indicates uncertainty and raises doubts about the validity or honesty of something.
doubtful
Suggests uncertainty or disbelief regarding a particular fact or situation.
suspicious
Implies a belief that someone or something is potentially dishonest or dangerous.
uncertain
Conveys a lack of sureness or confidence about something.
unlikely
Indicates a low probability of something happening or being true.
implausible
Suggests that something is difficult to believe or accept.
tenuous
Describes something with a weak or fragile basis.
equivocal
Open to more than one interpretation; ambiguous.
debatable
Open to discussion or argument; not clearly decided.
problematic
Presenting a problem or difficulty.
FAQs
How can I use "dubious" in a sentence?
You can use "dubious" to describe something that seems questionable or uncertain. For example, "He presented a "dubious claim" about his past accomplishments" or "The company's accounting practices seemed highly "dubious"".
What words are similar to "dubious"?
Alternatives to "dubious" include "doubtful", "questionable", "suspicious", and "uncertain". The best choice depends on the specific nuance you want to convey.
Is it better to use "dubious" or "doubtful"?
While both "dubious" and "doubtful" express uncertainty, "dubious" often suggests a stronger sense of skepticism or suspicion. Use "dubious" when you want to imply that something is not only uncertain but also potentially untrustworthy. "Doubtful" might be preferred in situations that refer to the state of the mind, like "I'm doubtful about that".
What's the difference between "dubious" and "ambiguous"?
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
94%
Authority and reliability
4.6/5
Expert rating
Real-world application tested