Wordnet 3.0
ADVERB (2)
1. 
 in a sordid manner; 
- Example: "as dirtily drunk as usual"2. 
 in a filthy unclean manner; 
- Example: "a dirtily dressed camel driver"[syn: dirtily, filthily]
The Collaborative International Dictionary of English v.0.48:
Dirtily \Dirt"i*ly\, adv.
   In a dirty manner; foully; nastily; filthily; meanly;
   sordidly.
   [1913 Webster]
WordNet (r) 3.0 (2006):
dirtily
    adv 1: in a sordid manner; "as dirtily drunk as usual"
    2: in a filthy unclean manner; "a dirtily dressed camel driver"
       [syn: dirtily, filthily]