Source : Webster's Revised Unabridged Dictionary (1913)

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

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

   Syn: Irksome; tiresome; tedious; fatiguing; annoying;
        vexatious. See {Irksome}. -- {Wea"ri*some*ly}, adv. --
        {Wea"ri*some*ness}, n.

Source : WordNet®

wearisome
     adj : so lacking in interest as to cause mental weariness; "a
           boring evening with uninteresting people"; "the
           deadening effect of some routine tasks"; "a dull play";
           "his competent but dull performance"; "a ho-hum speaker
           who couldn't capture their attention"; "what an irksome
           task the writing of long letters is"- Edmund Burke;
           "tedious days on the train"; "the tiresome chirping of
           a cricket"- Mark Twain; "other people's dreams are
           dreadfully wearisome" [syn: {boring}, {deadening}, {dull},
            {ho-hum}, {irksome}, {slow}, {tedious}, {tiresome}]