Compounds of だろ

• だろ
  (exp) (1) seems
  I think
  I guess
  I wonder
  I hope
  (2) don't you agree?
  I thought you'd say that!
• だろう
  (exp) (1) seems
  I think
  I guess
  I wonder
  I hope
  (2) don't you agree?
  I thought you'd say that!
  (P)
• でなくて何だろう
  (exp) (uk) if not ... then what is it?
  (this) is nothing other than ...