Search Result for "dysphemism": 
Wordnet 3.0

NOUN (1)

1. an offensive or disparaging expression that is substituted for an inoffensive one;
- Example: "his favorite dysphemism was to ask for axle grease when he wanted butter"



WordNet (r) 3.0 (2006):

dysphemism
    n 1: an offensive or disparaging expression that is substituted
         for an inoffensive one; "his favorite dysphemism was to ask
         for axle grease when he wanted butter" [ant: euphemism]