Wordnet 3.0
ADVERB (2)
1. 
 as in a melodrama; 
- Example: "here, the hero is melodramatically reunited with the heroine"2. 
 in an overly emotional manner; 
- Example: "she acted melodramatically when she called for help"
The Collaborative International Dictionary of English v.0.48:
Melodramatic \Mel`o*dra*mat"ic\, a. [Cf. F. m['e]lodramatique.]
   Of or pertaining to melodrama; like or suitable to a
   melodrama; unnatural in situation or action. --
   Mel`o*dra*mat"ic*al*ly, adv.
   [1913 Webster]
WordNet (r) 3.0 (2006):
melodramatically
    adv 1: as in a melodrama; "here, the hero is melodramatically
           reunited with the heroine"
    2: in an overly emotional manner; "she acted melodramatically
       when she called for help"