If I lose my job, I'll have nothing to fall back on. The company can always fall back on its core business if any of the subsidiaries fail. We can fall back on a few other babysitters if Jane can't make it.
To create (a reputation, chance, role, rank, career, victory) by hard work
he carved out a large fortune in a short time. He moved to Boston to carve out a new life for himself. The company has carved out a reputation for providing friendly and professional service.
