This stepbrother of his was the only tie he had and of course that is not a blood tie.
This man in the hotel dining room could not be his stepbrother.
It was not a car like Uncle Clem's—not even a stepbrother to it.
He, too, was only stepson and stepbrother to the family he fathered.
The remarks about her dependence on her stepbrother slid from her very lightly.