From Longman Dictionary of Contemporary Englishdubiousdu‧bi‧ous /ˈdjuːbiəs $ ˈduː-/●くろまる○しろまる○しろまる adjective1DISHONESTprobably not honest, true, right etcThe firm was accused of dubious accounting practices.Many critics regard this argument as dubious or, at best, misleading.The assumption that growth in one country benefits the whole world is highly dubious.2NOT SURE[not before noun] not sure whether something is good or trueSYN doubtfulI can see you are dubious; take some time to think about it.dubious aboutSome universities are dubious about accepting students over the age of 30.‘Are you sure you know what you are doing?’ Andy said, looking dubious.3 →the dubious honour/distinction/pleasure (of doing something)4not good or not of good qualityThe room was decorated in dubious taste. —dubiously adverb —dubiousness noun [uncountable]Examples from the Corpusdubious• The new strategy of stopping drug smugglers is untested and dubious.• Local people are dubious about whether that will ever happen.• But the analogies which are used to justify the transition are dubious at best.• I was a bitdubious at first, but I was hot and sticky and the water looked tempting.• Few teams can make that dubiousclaim.• Aside from its dubiousculturalcharm, there are seriousstructuralweaknesses which may one day embarrass us.• It would have been a rather dubiousdouble, as Garnett was making history.• What dubious manipulation of the system would they use for their own political ends?• Newsome failed to explain his dubiouspersonalfinances.• From somewhere nearby came a very dubioussmell.highly dubious• Honest answers to these questions suggest that the general assumption that growth in one country benefits the entire world is highly dubious.• Much of the wealth and propertyacquired by these people is highly dubious from a legalstandpoint.• Considering his own, highly dubiousprofession, Kirov had his own set of moralvalues.• This means that many cylinder records survivingtoday have highly dubiousprovenances, as we shall see later.Origindubious(1500-1600)Latindubius, from dubare"to be unable to decide"