The Collaborative International Dictionary of English v.0.48:
Indebtedness \In*debt"ed*ness\, n. 1. The state of being indebted. [1913 Webster] 2. The sum owed; debts, collectively. [1913 Webster]WordNet (r) 3.0 (2006):
indebtedness n 1: an obligation to pay money to another party [syn: indebtedness, liability, financial obligation] 2: a personal relation in which one is indebted for a service or favor [syn: obligation, indebtedness]