As used in this chapter, unless the context requires a different meaning: “Adverse action” means a denial or revocation of credit, a change in the terms of an existing credit arrangement, or a refusal to grant credit in substantially the amount or on substantially the terms requested. The term does not include a refusal to extend additional credit under an existing credit arrangement where the applicant is delinquent or otherwise in default, or where such additional credit would exceed a previously established credit limit. “Applicant” means any person who applies to a creditor directly for an extension, renewal, or continuation of credit, or applies to a creditor indirectly by use of an existing credit plan for an amount exceeding the previously established credit limit. “Credit” means the right granted by a creditor to a debtor to defer payment of debt or to incur debt and defer its payment or to purchase property or services and defer payment therefor. “Creditor” means any person who regularly extends, renews, or continues credit; any person who regularly arranges for the extension, renewal, or continuation of credit; or any assignee of an original creditor who participates in the decision to extend, renew, or continue credit.