さあ

さあ · さー

1. interjection, used to urge or encourage others come (on); come now; come along; here
2. indicates resolve all right; right; okay; now; here goes
3. indicates uncertainty or hesitation well; hmm; uh; let's see; I'm not sure
4. said when something arrives, starts, finishes, etc. here; now; there (we go); ah; oh
5. used when interrupting someone about that, ...; actually, ...