Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of doubtful is as below...

Problematical :: Problematical (a.) Having the nature of a problem; not shown in fact; questionable; uncertain; unsettled; doubtful.

Indubitable :: Indubitable (a.) Not dubitable or doubtful; too evident to admit of doubt; unquestionable; evident; apparently certain; as, an indubitable conclusion..

Incertum :: Incertum (a.) Doubtful; not of definite form.

Doubtfulness :: Doubtfulness (n.) Uncertainty of event or issue.

Doubtful :: Doubtful (a.) Of uncertain issue or event.

Samarium :: Samarium (n.) A rare metallic element of doubtful identity.

Doubtful :: Doubtful (a.) 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; as, we are doubtful of a fact, or of the propriety of a measure..

Experiment :: Experiment (n.) Atrial or special observation, made to confirm or disprove something doubtful; esp., one under conditions determined by the experimenter; an act or operation undertaken in order to discover some unknown principle or effect, or to test, establish, or illustrate some suggest or known truth; practical test; poof..

Questionableness :: Questionableness (n.) The quality or state of being questionable, doubtful, or suspicious..

Incertitude :: Incertitude (n.) Uncertainty; doubtfulness; doubt.

Indubitate :: Indubitate (a.) Not questioned or doubtful; evident; certain.

Selah :: Selah (n.) A word of doubtful meaning, occuring frequently in the Psalms; by some, supposed to signify silence or a pause in the musical performance of the song..

Litigious :: Litigious (a.) Subject to contention; disputable; controvertible; debatable; doubtful; precarious.

Norwegium :: Norwegium (n.) A rare metallic element, of doubtful identification, said to occur in the copper-nickel of Norway..

Amphibological :: Amphibological (a.) Of doubtful meaning; ambiguous.

Ambiguously :: Ambiguously (adv.) In an ambiguous manner; with doubtful meaning.

Dubiosity :: Dubiosity (n.) The state of being doubtful; a doubtful statement or thing.

Doubtfully :: Doubtfully (adv.) In a doubtful manner.

Demimonde :: Demimonde (n.) Persons of doubtful reputation; esp., women who are kept as mistresses, though not public prostitutes; demireps..

Equivocate :: Equivocate (a.) To use words of equivocal or doubtful signification; to express one's opinions in terms which admit of different senses, with intent to deceive; to use ambiguous expressions with a view to mislead; as, to equivocate is the work of duplicity..

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