Wordnet 3.0
ADVERB (2)
1. 
 in a refined manner; 
- Example: "she nibbled daintily at her cake"2. 
 in a delicate manner; 
- Example: "the invitation cards were written up daintily in white and gold"
The Collaborative International Dictionary of English v.0.48:
Daintily \Dain"ti*ly\, adv.
   In a dainty manner; nicely; scrupulously; fastidiously;
   deliciously; prettily.
   [1913 Webster]
WordNet (r) 3.0 (2006):
daintily
    adv 1: in a refined manner; "she nibbled daintily at her cake"
    2: in a delicate manner; "the invitation cards were written up
       daintily in white and gold"