Related Clues:

• Oil directly from a well
• Unlike Miss Manners
• Well-made product?
• Lacking manners
• Oil refinery input
• Like butting in
• Ungentle
• Not very nice
• Snarling, say
• Uncivilised
• Coarse or impolite
• Impolite or vulgar
• Coarse and unrefined
• Lacking civility
• Discourteous or unrefined