Source : Webster's Revised Unabridged Dictionary (1913)

Charming \Charm"ing\, a.
   Pleasing the mind or senses in a high degree; delighting;
   fascinating; attractive.

         How charming is divine philosophy.       --Milton.

   Syn: Syn. - Enchanting; bewitching; captivating; enrapturing;
        alluring; fascinating; delightful; pleasurable;
        graceful; lovely; amiable; pleasing; winning. --
        {Charm"ing*ly}, adv. -- {Charm"ing*ness}, n.

Source : WordNet®

charmingly
     adv : in a charming manner