Usurer (noun)

A person who lends money at a very high rate of interest.

Origin:

Middle english: from old french usurier, from latin usurarius, from usura "interest".

Examples:

1. The usurer charged exorbitant interest rates on the loan.
2. He was considered a ruthless usurer who preyed on the poor.
3. The usurer's business was illegal and he eventually got caught.
4. He was accused of being a usurer and charged with extortion.
5. Many people fell into debt with the usurer and lost everything they had.