Wordnet 3.0
ADJECTIVE (1)
1. 
 in violation of good taste even verging on the indecent; 
- Example: "an indelicate remark"- Example: "an off-color joke"[syn: indelicate, off-color, off-colour]
WordNet (r) 3.0 (2006):
off-colour
    adj 1: in violation of good taste even verging on the indecent;
           "an indelicate remark"; "an off-color joke" [syn:
           indelicate, off-color, off-colour]