usurious

Example:A legitimate interest rate is one that is fair and not exorbitant.

Definition:(actual, true, or real) real; not false or imitation; authentic; normal.

Example:The lender must ensure that the interest rates are reasonable and not usurious.

Definition:not unreasonable; calculated or proposed with an adequate basis in reason; fair and right; proper; adjusted to the circumstances or occasion; not extreme.

Example:It would be unfair to charge usurious interest on a loan when a fair rate is available.

Definition:not unfair or unjust; agreeing with the laws of equity or justice; reasonable in price, quality, or value; proper and reasonable; equitable; just.