The Collaborative International Dictionary of English v.0.48:
Peccable \Pec"ca*ble\, a. [Cf. F. peccable. See Peccant.] Liable to sin; subject to transgress the divine law. "A frail and peccable mortal." --Sir W. Scott. [1913 Webster]WordNet (r) 3.0 (2006):
peccable adj 1: liable to sin; "a frail and peccable mortal"- Sir Walter Scott [syn: peccable, peccant]