Wordnet 3.0
ADVERB (2)
1. 
 with jealousy; 
- Example: "he guarded his privacy jealously"2. 
 with jealousy; 
 in an envious manner; 
- Example: "he looked at his friend's new car jealously"[syn: enviously, covetously, jealously]
The Collaborative International Dictionary of English v.0.48:
Jealously \Jeal"ous*ly\, adv.
   In a jealous manner.
   [1913 Webster]
WordNet (r) 3.0 (2006):
jealously
    adv 1: with jealousy; "he guarded his privacy jealously"
    2: with jealousy; in an envious manner; "he looked at his
       friend's new car jealously" [syn: enviously, covetously,
       jealously]