Curiosity killed the cat. ✬

I went there out of curiosity. ✬

I only ask out of curiosity. ✬

I did it out of curiosity. ✬

Just out of curiosity, what would you do? ✬

Eventually, Tom's curiosity overcame his fear. ✬

Tom's curiosity got the better of him. ✬

Just out of curiosity, did you really have to do that? ✬

My curiosity was aroused. ✬

My curiosity was piqued. ✬