"They have with them some very difficult men," he said.

A difficult man, always up to some game of his own.

He was a very difficult man to understand, but a great one at that.

He is a very difficult man to work with, at first.

He's a difficult man, not easy to be friendly with.

Like it or not, her emotions were involved with this difficult man.

You have become a difficult man to reach, big brother.

He was a difficult man to love, that is certain.

"He must have been a difficult man to work for."

Holmes was certainly not a difficult man to live with.