remora /remˈə-rə/

1. The sucking-fish, formerly believed to stop ships by attaching its sucker
2. An obstacle (figurative)

• dungarees
• dung-beetle
• dung-beetles
• dung-cart
• dung-carts
• dunged
• dungeon
• dungeoned
• dungeoner
• dungeoners
• dungeoning
• dungeons
• dung-flies
• dung-fly
• dung-fork
• dung-forks
• dungheap
• dungheaps
• dunghill
• dunghills
• dung-hunter
• dung-hunters
• dungier
• dungiest
• dunging