In the beginning it had been simple curiosity on her part.

Something stopped him doing that, simple curiosity as to what was inside the box.

But his attitude toward me went a long way past simple curiosity.

A simple curiosity about how the story came out was acceptable to me.

Did you ask these things out of simple curiosity, or something more?

Simple curiosity might bring them out to look at the wreckage.

Paul remembered looking at the husband, knowing there was more to the question than simple curiosity.

I think that was just simple curiosity on his part.

They usually show up in places out of simple curiosity.

So when I decided to meet him, one of my reasons was simple curiosity.