dubious
Americanadjective
-
doubtful; marked by or occasioning doubt.
a dubious reply.
-
of doubtful quality or propriety; questionable.
a dubious compliment; a dubious transaction.
-
of uncertain outcome.
in dubious battle.
-
wavering or hesitating in opinion; inclined to doubt.
adjective
-
marked by or causing doubt
a dubious reply
-
unsettled in mind; uncertain; doubtful
-
of doubtful quality; untrustworthy
a dubious reputation
-
not certain in outcome
Synonym Usage
See doubtful.
Other Word Forms
Etymology
Origin of dubious
First recorded in 1540–50; from Latin dubius; cf. doubt ( def. )
Explanation
Choose the adjective dubious for something you have doubts about or you suspect is not true. That bridge you just "bought" might be of dubious value. Dubious stems from Latin dubiosus, "doubtful" or "uncertain," and contains the Latin root duo in this case meaning "of two minds." This is apparent in that dubious generally describes something that appears one way but is truly another. A dubious claim is probably not true, whereas a dubious website or character is of questionable quality. Dubious can also be synonymous with doubtful, as in "she was dubious about the idea."
Vocabulary lists containing dubious
The SAT: Words to Capture Tone, List 2
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Lord of the Flies
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The New SAT: Words to Capture Tone
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
But it also can employ dubious proxies like keyboard strokes and how often your computer screen goes into sleep mode.
From The Wall Street Journal ● Aug. 20, 2026
But others are still dubious that the city will fulfill its promises — or that the project itself will ever be finished.
From Los Angeles Times ● Aug. 14, 2026
It "cannot keep going on" with "secret schemes of fast-track timescales cooked up by faceless individuals and of dubious benefit to the game"
From BBC ● Aug. 1, 2026
And to specifically bring it back to Douthat’s dubious query, Diarra — either of them — is precisely the kind of woman who puts the lie to fantasies about female submissiveness.
From Salon ● Aug. 1, 2026
“You will probably turn up as an earnest young psychic researcher. And I will be a lady of undeniable gifts but dubious reputation.”
From "The Haunting of Hill House" by Shirley Jackson
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
