My intention was not such.
I didn't mean to put that on there.
From the first I had no intention of going there.
I didn't mean to eavesdrop on your conversation.
I didn't mean to step on your foot.
I never would have thought...
That's the last thing I expected.
It doesn't cost as much as I thought.
I felt as if it were my own affair.
I didn't think about that at all.