"I'm beginning to wonder whether you do have a cruel streak."

For all he knew, the stress of the situation was bringing out Paul's cruel streak.

Our mentor might be considerate of us, but he has his cruel streak.

Which accounted for their cruel streak, to be sure.

Once or twice I tried to beat the cruel streak out of him, and that didn't work either.

Megan had a cruel streak he had always known about.

Who has a cruel and vicious streak in him?

She had never understood nor accepted that cruel streak in him.

But it wasn't long before he started to show a cruel streak, a meanness of spirit.

He's got a cruel streak in him a mile wide.