ambitendent ambivalent arguable at loose ends capricious changeable debatable double-minded dubious faltering fence-sitting fence-straddling fickle hesitant hesitating indecisive indefinite infirm of purpose irresolute irresolved mercurial moot mugwumpian mugwumpish mutable of two minds open open to question pending problematical questionable shilly-shally unanswered uncertain undecided undetermined unsettled unsolved unsure vacillating vague wavering