A post written off settled refers to a situation where a debt has been recognized as uncollectible by a creditor, but the debtor has reached a settlement agreement. This means that the debtor and creditor have agreed on a reduced amount to settle the debt, and the rest of the balance is forgiven. In terms of credit reporting, this is often marked as ‘settled’ rather than ‘paid in full,’ which indicates that the account is no longer overdue but was not fully paid.