From WordNet (r) 3.0 (2006):
rude
adj 1: socially incorrect in behavior; "resentment flared at
such an unmannered intrusion" [syn: ill-mannered, bad-
mannered, rude, unmannered, unmannerly]
2: (of persons) lacking in refinement or grace [syn: ill-bred,
bounderish, lowbred, rude, underbred, yokelish]
3: lacking civility or good manners; "want nothing from you but
to get away from your uncivil tongue"- Willa Cather [syn:
uncivil, rude] [ant: civil, polite]
4: (used especially of commodities) being unprocessed or
manufactured using only simple or minimal processes; "natural
yogurt"; "natural produce"; "raw wool"; "raw sugar"; "bales
of rude cotton" [syn: natural, raw(a), rude(a)]
5: belonging to an early stage of technical development;
characterized by simplicity and (often) crudeness; "the crude
weapons and rude agricultural implements of early man";
"primitive movies of the 1890s"; "primitive living conditions
in the Appalachian mountains" [syn: crude, primitive,
rude]