1) Rude Bad-Mannered, Ill-Mannered, Unmannered, Unmannerly
Socially incorrect in behavior.
A rude person.
2) Rude Bounderish, Ill-Bred, Lowbred, Underbred, Yokelish
(of persons) lacking in refinement or grace.
3) Rude AdjectiveUncivil
Lacking civility or good manners.
Want nothing from you but to get away from your uncivil tongue.
(used especially of commodities) being unprocessed or manufactured using only simple or minimal processes.
Belonging to an early stage of technical development; characterized by simplicity and (often) crudeness.
The crude weapons and rude agricultural implements of early man.