If you describe something as dubious, you mean that you do not consider it to be completely honest, safe, or reliable. This claim seems to us to be rather dubious = questionable + dubiously du·bi·ous·ly Carter was dubiously convicted of shooting three white men in a bar
Occasioning doubt; not clear, or obvious; equivocal; questionable; doubtful; as, a dubious answer
fraught with uncertainty or doubt; "they were doubtful that the cord would hold"; "it was doubtful whether she would be admitted"; "dubious about agreeing to go"
If you say that someone has the dubious honour or the dubious pleasure of doing something, you are indicating that what they are doing is not an honour or pleasure at all, but is, in fact, unpleasant or bad. Nagy has the dubious honour of being the first athlete to be banned in this way
If you are dubious about something, you are not completely sure about it and have not yet made up your mind about it. My parents were dubious about it at first but we soon convinced them. = doubtful + dubiously du·bi·ous·ly He eyed Coyne dubiously
open to doubt or suspicion; "the candidate's doubtful past"; "he has a dubious record indeed"; "what one found uncertain the other found dubious or downright false"; "it was more than dubitable whether the friend was as influential as she thought"- Karen Horney