Dubious vs. Doubtful — What's the Difference?

Fraught with uncertainty or doubt; undecided.

Subject to or causing doubt

Arousing doubt; doubtful

Experiencing or showing doubt

Of questionable character

Of uncertain outcome; undecided.

(of a statement, matter, or thing) Arousing doubt; questionable; open to suspicion.

Raising doubts as to legitimacy, honesty, or respectability; suspicious

(of a person) In disbelief; wavering, uncertain, or hesitating in opinion; inclined to doubt; undecided.

Subject to, or causing doubt.

Generally considered imprecise or wrong, but not totally unplayable.

Experiencing or showing doubt, sceptical.

Doubtful or not settled in opinion; being in doubt; wavering or fluctuating; undetermined.

Undecided or of uncertain outcome.

Occasioning doubt; not clear, or obvious; equivocal; questionable; doubtful; as, a dubious answer.

(obsolete) Fearsome, dreadful.

Of uncertain event or issue; as, in dubious battle.

Improbable or unlikely.

Fraught with uncertainty or doubt;

Suspicious, or of dubious character.

Open to doubt or suspicion;

Unclear or unreliable.

Not convinced;

A doubtful person or thing.

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.

Admitting of doubt; not obvious, clear, or certain; questionable; not decided; not easy to be defined, classed, or named; as, a doubtful case, hue, claim, title, species, and the like.

Characterized by ambiguity; dubious; as, a doubtful expression; a doubtful phrase.

Of uncertain issue or event.

Fearful; apprehensive; suspicious.

Open to doubt or suspicion;

Fraught with uncertainty or doubt;

Unsettled in mind or opinion;