The Collaborative International Dictionary of English v.0.48:

Renable \Ren"a*ble\ (r?n"?-b'l), a. [OF. resnable.]
   Reasonable; also, loquacious. [Obs.] "Most renable of
   tongue." --Piers Plowman. -- Ren"a*bly, adv. [Obs.]
   --Chaucer.
   [1913 Webster]