Source : Webster's Revised Unabridged Dictionary (1913)

Seemly \Seem"ly\, adv. [Compar. {Seemlier}; superl.
   {Seemliest}.]
   In a decent or suitable manner; becomingly.

         Suddenly a men before him stood, Not rustic as before,
         but seemlier clad, As one in city or court or place
         bred.                                    --Milton.

Seemly \Seem"ly\, a. [Compar.{Seemlier}; superl. {Seeliest}.]
   [Icel. s?miligr, fr. s?mr becoming, fit; akin to samr same,
   E. same; the sense being properly, the same or like, hence,
   fitting. See {Seem}, v. i.]
   Suited to the object, occasion, purpose, or character;
   suitable; fit; becoming; comely; decorous.

         He had a seemly nose.                    --Chaucer.

         I am a woman, lacking wit To make a seemly answer to
         such persons.                            --Shak.

         Suspense of judgment and exercise of charity were safer
         and seemlier for Christian men than the hot pursuit of
         these controversies.                     --Hooker.

   Syn: Becoming; fit; suitable; proper; appropriate; congruous;
        meet; decent; decorous.

Source : WordNet®

seemly
     adj : according with custom or propriety; "her becoming modesty";
           "comely behavior"; "it is not comme il faut for a
           gentleman to be constantly asking for money"; "a decent
           burial"; "seemly behavior" [syn: {becoming}, {comely},
           {comme il faut}, {decent}, {decorous}]
     [also: {seemliest}, {seemlier}]