debt (n.) Look up debt at Dictionary.com
late 13c., dette, from Old French dete, from Latin debitum "thing owed," neuter past participle of debere "to owe," originally, "keep something away from someone," from de- "away" (see de-) + habere "to have" (see habit (n.)). Restored spelling after c.1400. In Middle English, debt of the body (mid-14c.) was "that which spouses owe to each other, sexual intercourse."