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.