Answer: Ghost
More Tricky Riddles with answers
Previous: I am free yet priceless, you can't own me but you can use me, you can't keep me but you can spend me. Once you lost me you can never have me back. What am I?
Next: I am not found on any ground, But always in the air; Though charged each cloud with thunder loud, You can not find me there. Now, if from France you choose to dance Your way just into Spain, I there am seen, and near the queen, In hail, in mist, and rain. What am I?