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The definition of dubious

4 Definitions of: dubious

    1. adjective, marked by or causing doubt
    2. adjective, unsettled in mind; uncertain; doubtful
    3. adjective, of doubtful quality; untrustworthy
    4. adjective, not certain in outcome
    5. Show me some examples of this word: dubious
    6. Show me the etymology of the word: dubious
Synonyms: moot, ambiguous, suspect, suspicious, crooked, dodgy (Brit. Austral. N.Z. informal), questionable, shady (informal), unscrupulous, fishy (informal) And more...
Antonyms: trustworthy, sure
 

From Collins