Related Clues:

• Grossly stupid councillor Trump's behind
• They say starter perhaps is lacking in taste
• Crude, as behavior
• Rough route, it's said
• Rough route, reportedly
• Rough around the edges
• Like rough sandpaper
• Hardly tasteful
• Not refined, bringing rowing gear into Church
• Needing smoothing
• Refined antonym
• Filled with four-letter words
• Stupid group of schoolchildren taking the wrong direction
• Rough path, we hear
• Stupid students swapping sides