Source : Webster's Revised Unabridged Dictionary (1913)

Appealing \Ap*peal"ing\, a.
   That appeals; imploring. -- {Ap*peal"ing*ly}, adv. --
   {Ap*peal"ing*ness}, n.

Source : WordNet®

appealingness
     n : attractiveness that interests or pleases or stimulates; "his
         smile was part of his appeal to her" [syn: {appeal}, {charm}]