Suf"fer*a*bly

from The Collaborative International Dictionary of English v.0.48

Sufferable \Suf"fer*a*ble\, a. [Cf. F. souffrable.]
   1. Able to suffer or endure; patient. [Obs.] "Ye must be
      sufferable." --Chaucer.
      [1913 Webster]

   2. That may be suffered, tolerated, or permitted; allowable;
      tolerable.
      [1913 Webster] -- {Suf"fer*a*ble*ness}, n. --
      {Suf"fer*a*bly}, adv.
      [1913 Webster]