|1.||[ adjective ] 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"
|2.||[ adjective ] open to doubt or suspicion|
|Synonyms:||doubtful in_question dubitable|
"the candidate's doubtful past" "he has a dubious record indeed" "what one found uncertain the other found dubious or false" "it was more than dubitable whether the friend was as influential as she thought"- Karen Horney
|3.||[ adjective ] not convinced|
"they admitted the force of my argument but remained dubious"