undecided

形容词 undecided:

1. not brought to a conclusion; subject to further thought
   同义词：open, undetermined, unresolved
2. characterized by indecision
   同义词：on the fence
3. not yet having made a commitment

1. He is still undecided.
   他仍未下定决心。
2. I'm still undecided (about) who to vote for.
   我尚未决定投谁的票。
3. The issue/matter remains undecided.
   这个问题仍然悬而未决。
4. The (outcome of the) match is still undecided.
   比赛(的结果)尚未见分晓。