Extended Strong's Greek Lexicon (Abbott-Smith based)
debtor
Usage: ὀφειλέτης, -ου, ὁ (ὀφείλω), a debtor: with genitive (of the amount), Mat.18:24. Metaphorical, of obligation or duty in general, with reference to favours received or injury done, etc.: Mat.6:12, Rom.1:14 8:12 15:27, Gal.5:3; of sinners, in relation to God (= Heb. חַיָּב; cf. Sir (Heb.8:5) (6)), Luk.13:4.† (AS)