adjective

• 1 rare That is guilty of failing to fulfil a promise, contract, obligation, etc.

• 2Designating or relating to a person affiliated with the arts but not involved in public performance. Also: denoting an art such as painting, sculpture, etc., which does not normally involve public performance by the artist.

• 3Finance
  Of, relating to, or denoting an asset that is not producing the anticipated or contractually due income; especially denoting a loan whose borrower has defaulted on repayments. Frequently in "non-performing asset", "non-performing loan".

  A loan is usually declared non-performing after a certain time has elapsed since the last repayment, which time varies from country to country.