The Collaborative International Dictionary of English v.0.48:

Stately \State"ly\, a. [Compar. Statelier
   (st[=a]t"l[i^]*[~e]r); superl. Stateliest.]
   Evincing state or dignity; lofty; majestic; grand; as,
   stately manners; a stately gait. "The stately homes of
   England!" --Mrs. Hemans. "Filled with stately temples."
   --Prescott.
   [1913 Webster]

         Here is a silly stately style indeed!    --Shak.
   [1913 Webster]

   Syn: Lofty; dignified; majestic; grand; august; magnificent.
        [1913 Webster]