Wordnet 3.0
NOUN (2)
1. 
 the trait of behaving with reserve and decorum; 
2. 
 the affectation of being demure in a provocative way; 
[syn: coyness, demureness]
The Collaborative International Dictionary of English v.0.48:
Demureness \De*mure"ness\ (d[-e]*m[=u]r"n[e^]s), n.
   The state of being demure; gravity; the show of gravity or
   modesty.
   [1913 Webster]
WordNet (r) 3.0 (2006):
demureness
    n 1: the trait of behaving with reserve and decorum
    2: the affectation of being demure in a provocative way [syn:
       coyness, demureness]