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Definition doubtful
in various senses, including:
  • doubtful that something should be relied upon — as in "The argument relies on a dubious assumption."
  • doubtful that something is morally proper — as in "The company is accused of using dubious sales practices to influence minors."
  • bad or of questionable value — as in "The state has the dubious distinction of the highest taxes."
  • doubtful or uncertain — as in "She is dubious about making the change."
  • She was dubious, but agreed to come with us anyway.
dubious = doubtful; or suspicious; or full of uncertainty
  • She has a dubious reputation. I wouldn't count on her.
  • dubious = doubtful (not to be relied upon)
  • To my taste, the authors made some dubious leaps of faith in their analysis,
    Dan Brown  --  The Da Vinci Code
  • dubious = doubtful (not to be relied upon)
  • Simon looked dubious. "What makes you think so?"
    Cassandra Clare  --  City of Bones
  • dubious = doubtful
  • Marilla was not to be drawn from the safe concrete into dubious paths of the abstract.
    Lucy Maud Montgomery  --  Anne Of Green Gables
  • dubious = doubtful (not to be relied upon)
  • Blomberg looked dubious, but the explanation was reasonable and...
    Stieg Larsson  --  The Girl with the Dragon Tattoo
  • dubious = doubtful or suspicious
  • But that would have taken us over the dubious southern uplands of the Islamic Republic of Iran, and we do not do that.
    Marcus Luttrell  --  Lone Survivor
  • dubious = doubtful or dangerous (not to be relied upon)
  • "I'm not a monster—I'm a friend."
    "Friend?" inquired the girl with a dubious tone.
    Henry H. Neff  --  The Fiend And The Forge
  • dubious = doubtful; or suspicious
  • We thought his morals dubious and tried to avoid him.
    Wladyslaw Szpilman  --  The Pianist
  • dubious = doubtful (not to be relied upon)
  • Seeing the farmer eying him dubiously, he added, "I'll be glad to sleep in the barn."
    Upton Sinclair  --  The Jungle
  • dubiously = doubtfully or suspiciously
  •   "Could we have some champagne, please?"
      "You're twenty-one?" she asked dubiously.
    John Green  --  The Fault in Our Stars
  • dubiously = doubting it was true
  • "Yah," Meg said dubiously.
    Madeleine L'Engle  --  A Wrinkle in Time
  • dubiously = full of doubt
  • A woman of dubious reputation who...
    J.D. Robb  --  Naked in Death
  • dubious = doubtful or suspicious
  • "Will it hold them?" asked Cooper, looking dubiously at the door.
    Henry H. Neff  --  The Second Siege
  • dubiously = with doubt or uncertainty
  • "I don't see that 'tis any business of ours," Smallbury murmured dubiously.
    Thomas Hardy  --  Far from the Madding Crowd
  • dubiously = doubtfully
  • Chuck Muckle whipped off his shades and eyed the patrolman dubiously.
    Carl Hiassen  --  Hoot
  • dubiously = doubtfully or suspiciously
  • "I doubt if she would have had the strength to inflict that left-handed blow," said Dr. Constantine dubiously.
    Agatha Christie  --  Murder On The Orient Express
  • dubiously = doubtfully
  • And yet, from time to time, Poirot continued to sniff it dubiously, as though his keener nose detected something I had missed.
    Agatha Christie  --  Early Cases Of Hercule Poirot
  • dubiously = suspiciously
  • ...they all began discussing dragon-slayings historical, dubious, and mythical...
    J.R.R. Tolkien  --  The Hobbit
  • dubious = doubtful (as true history)
  • Officer Pete Gandy was sitting at the kitchen table, looking across at them, not bothering to hide the dubious expression on his face.
    Nicholas Sparks  --  The Guardian
dubious = doubtful or suspicious

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