Wordnet 3.0
ADVERB (3)
1. 
 in mental comfort; 
 without stress; 
- Example: "he works comfortably on three continents"2. 
 in physical comfort; 
- Example: "she could have been lying comfortably in bed getting the same relief"3. 
 in financial comfort; 
- Example: "They live well"- Example: "she has been able to live comfortably since her husband died"[syn: well, comfortably]
The Collaborative International Dictionary of English v.0.48:
Comfortably \Com"fort*a*bly\, adv.
   In a comfortable or comforting manner.
   [1913 Webster]
         Speak ye comfortably to Jerusalem.       --Is. xl. 2.
   [1913 Webster]
WordNet (r) 3.0 (2006):
comfortably
    adv 1: in mental comfort; without stress; "he works comfortably
           on three continents"
    2: in physical comfort; "she could have been lying comfortably
       in bed getting the same relief" [ant: uncomfortably]
    3: in financial comfort; "They live well"; "she has been able to
       live comfortably since her husband died" [syn: well,
       comfortably]