The Collaborative International Dictionary of English v.0.48:

Comeliness \Come"li*ness\, n. [See Comely.]
   The quality or state of being comely.
   [1913 Webster]

         Comeliness is a disposing fair
         Of things and actions in fit time and place. --Sir J.
                                                  Davies.
   [1913 Webster]

         Strength, comeliness of shape, or amplest merit.
                                                  --Milton.
   [1913 Webster]

         Comeliness signifies something less forcible than
         beauty, less elegant than grace, and less light than
         prettiness.                              --Johnson.
   [1913 Webster]

WordNet (r) 3.0 (2006):

comeliness
    n 1: the quality of being good looking and attractive [syn:
         comeliness, fairness, loveliness, beauteousness]

Moby Thesaurus II by Grady Ward, 1.0:

56 Moby Thesaurus words for "comeliness":
   Atticism, agreeability, agreeableness, appropriateness,
   becomingness, bonniness, chasteness, chastity, clarity,
   classicalism, classicism, clearness, correctness, dignity,
   directness, discrimination, distinction, ease, elegance, elegancy,
   fairness, felicitousness, felicity, finish, fittingness, flow,
   flowing periods, fluency, good taste, goodliness, grace,
   gracefulness, gracility, limpidity, lucidity, naturalness,
   neatness, pellucidity, personableness, perspicuity, plainness,
   pleasingness, polish, propriety, purity, refinement, restraint,
   seemliness, sightliness, simplicity, smoothness,
   straightforwardness, taste, tastefulness, terseness,
   unaffectedness