Una*void"a*bly

from The Collaborative International Dictionary of English v.0.48

Unavoidable \Un`a*void"a*ble\, a.
   1. Not avoidable; incapable of being shunned or prevented;
      inevitable; necessary; as, unavoidable troubles.
      [1913 Webster]

   2. (Law) Not voidable; incapable of being made null or void.
      --Blackstone.
      [1913 Webster]

   {Unavoidable hemorrhage} (Med.), hemorrhage produced by the
      afterbirth, or placenta, being situated over the mouth of
      the womb so as to require detachment before the child can
      be born.
      [1913 Webster] -- {Un`a*void"a*ble*ness}, n. --
      {Un`a*void"a*bly}, adv.
      [1913 Webster]