N. debt, obligation, liability, indebtment, debit, # score, bill, check, account (credit) 805, arrears, deferred payment, deficit, default, insolvency, bad debt, interest, premium, usance, usury, floating debt, floating capital, debtor, debitor, mortgagor, defaulter, borrower

V. be in debt, owe, incur a debt, contract a debt, run up a bill, run up a score, run up an account, go on tick, borrow, run into debt, get into debt, outrun the constable, run up debts, run up bills (spend) 809, answer for, go bail for, bill, charge

Adj. indebted, liable, chargeable, answerable for, in debt, in embarrassed circumstances, in difficulties, incumbered, involved, involved in debt, plunged in debt, deep in debt, over one's head in debt, over head and ears in debt, deeply involved, fast tied up, insolvent, minus, out of pocket, unpaid, unrequited, unrewarded, owing, due, in arrear, outstanding, past due

Phr. aes alienum debitorem leve gravius inimicum facit, "neither a borrower nor a lender be"