Clare wondered if she could die from the pain in this dream, but the thought brought no fear, only a vague curiosity.

And aside from vague curiosity, why should I care?

For me, Silk is definitely in the box marked "vague curiosity".

He was too stunned with disappointment to look at it with more than vague curiosity.

All he had was a vague curiosity about why incumbents were so often re-elected.

I had little object - certainly no hope these researches; but a vague curiosity prompted me to continue them.

She felt little but a sense of vague curiosity.

Sitting around, indulging whatever vague curiosities came my way.

She grasped it with vague curiosity and held it out for identification.

It seemed like the moment had come to stop wandering about aimlessly, motivated by nothing more than vague curiosity.