Saintliest

from The Collaborative International Dictionary of English v.0.48

Saintly \Saint"ly\, a. [Compar. {Saintlier}; superl.
   {Saintliest}.]
   Like a saint; becoming a holy person.
   [1913 Webster]

         So dear to Heaven is saintly chastity.   --Milton.
   [1913 Webster] Saint Nicholas