adjective.
Less than prime; inferior.
adjective.
(now worldwide) Designating a loan (typically at a greater than usual rate of interest) offered to a borrower who is not qualified for other loans (e.g. because of poor credit history).
adjective.
(dated) Designating a type of commercial lending rate, less than the prime rate, offered to desirable borrowers.
noun.
A subprime loan.