a. | 1. | Not settled in opinion; undetermined; wavering; hesitating in belief; also used, metaphorically, of the body when its action is affected by such a state of mind; |
2. | Admitting of doubt; not obvious, clear, or certain; questionable; not decided; not easy to be defined, classed, or named; | |
3. | Characterized by ambiguity; dubious; | |
4. | Of uncertain issue or event. | |
5. | Fearful; apprehensive; suspicious. |
Adj. | 1. | doubtful - 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 |
2. | doubtful - 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" Synonyms: dubious | |
3. | doubtful - unsettled in mind or opinion; "drew a few tentative conclusions" Synonyms: tentative |