The Collaborative International Dictionary of English v.0.48:
Repayable \Re*pay"a*ble\ (-?-b'l), a. Capable of being, or proper to be, repaid; due; as, a loan repayable in ten days; services repayable in kind. [1913 Webster]WordNet (r) 3.0 (2006):
repayable adj 1: subject to repayment; "business loans are usually repayable in regular installments"