The Collaborative International Dictionary of English v.0.48:

Wearisome \Wea"ri*some\, a.
   Causing weariness; tiresome; tedious; weariful; as, a
   wearisome march; a wearisome day's work; a wearisome book.
   [1913 Webster]

         These high wild hills and rough uneven ways
         Draws out our miles, and makes them wearisome. --Shak.
   [1913 Webster]

   Syn: Irksome; tiresome; tedious; fatiguing; annoying;
        vexatious. See Irksome.
        [1913 Webster] -- Wea"ri*some*ly, adv. --
        Wea"ri*some*ness, n.
        [1913 Webster]