Wordnet 3.0
ADVERB (1)
1. 
 in a dingy manner; 
[syn: dingily, grubbily, grungily]
The Collaborative International Dictionary of English v.0.48:
Dingily \Din"gi*ly\, adv.
   In a dingy manner.
   [1913 Webster]
WordNet (r) 3.0 (2006):
dingily
    adv 1: in a dingy manner [syn: dingily, grubbily,
           grungily]