Source : Webster's Revised Unabridged Dictionary (1913)

Refragable \Ref"ra*ga*ble\ (r?f"r?*g?*b'l), a. [LL.
   refragabilis, fr. L. refragari to oppose.]
   Capable of being refuted; refutable. [R.] --
   {Ref"ra*ga*ble*ness}, n. [R.] -- {Ref`*ra*ga*bil"i*ty}
   (-b?l`?*t?), n. [R.]