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.
Oil futures rose for a third consecutive session with the market wary of continuing conflict in the Middle East and dubious about an energy ceasefire between Russia and Ukraine.
From The Wall Street Journal ● Oct. 12, 2026
If Secretary of Defense Pete Hegseth is to be believed, America will soon gain the dubious distinction of joining the only four countries on the globe that carry out executions in public.
From Los Angeles Times ● Oct. 10, 2026
From the start, when Jeremy runs into Lowen on the street before they meet at Verity’s publisher’s office, Hartnett makes Jeremy’s presence feel dubious.
From Salon ● Oct. 9, 2026
The account, whose posts mostly lacked original substance, "only gained popularity because its dubious, sordid content was narrated by the attractive voice of a popular actor," Tsuda's legal team said, according to the court records.
From Barron's ● Sep. 27, 2026
Compounded by Lawrence’s campaign for the Super, a project that many physicists considered technically and morally dubious, this record undermined his reputation as a scientist s scientist driven by the quest for knowledge alone.
From "Big Science" by Michael Hiltzik
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Get a wordDefinitions 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.
