Related Clues:

• Oil, before refining
• Far from genteel
• Unfashioned
• Lacking in refinement
• Oil state
• Disrespectful, in a way
• Not fit for mixed company
• It's measured in barrels
• Lacking tact
• Undiplomatic
• Lacking in tact
• Like some oil or humor
• Petroleum
• Not respectful
• Graceless