Wordnet 3.0
ADJECTIVE (1)
1. 
 characterized by obscenity; 
- Example: "had a filthy mouth"- Example: "foul language"- Example: "smutty jokes"[syn: cruddy, filthy, foul, nasty, smutty]
WordNet (r) 3.0 (2006):
cruddy
    adj 1: characterized by obscenity; "had a filthy mouth"; "foul
           language"; "smutty jokes" [syn: cruddy, filthy,
           foul, nasty, smutty]