11 alternatives for I don't know!

Our world is full mysteries and it not a crime to say; you don’t know. Here are a few ways you too can borrow to sound more classy or fluent. Enjoy


  1. I have no clue.
  2. I am not sure.
  3. I got no clue
  4. That’s a mystery to me!
  5. Let me double check and revert back.
  6. That’s beyond my understanding.
  7. That’s out of my reach.
  8. Let me investigate that.
  9. I can’t recall/remember that.
  10. I can’t recollect it.
  11. I don’t know anything about that!


  • I have no clue to why he did that.
  • The way he did that, still remains a mystery to me.