doubtfully, übersetzung im Collins English Cobuild & Thesaurus Wörterbuch

doubtful

1 adj If it is doubtful that something will happen, it seems unlikely to happen or you are uncertain whether it will happen.
usu v-link ADJ, oft it v-link ADJ that/wh
For a time it seemed doubtful that he would move at all..., It is doubtful whether Tweed, even with his fluent French, passed for one of the locals...

2  adj If you are doubtful about something, you feel unsure or uncertain about it.
usu v-link ADJ, oft ADJ about n (=dubious)
I was still very doubtful about the chances for success..., Why did he sound so doubtful?
♦ doubtfully    adv ADV after v (=dubiously)
Keeton shook his head doubtfully.

3  adj If you say that something is of  doubtful quality or value, you mean that it is of low quality or value.
usu ADJ n  (disapproval) (=dubious)
...selling something that is overpriced or of doubtful quality...

4 adj If a sports player is doubtful for a match or event, he or she seems unlikely to play, usually because of injury. (JOURNALISM) oft ADJ for n