remora /remˈə-rə/

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

• friendlies
• friendliest
• friendlily
• friendliness
• friendlinesses
• friendly
• friendly fire
• friendly lead
• friendly leads
• friendly numbers
• friendly societies
• friendly society
• friends
• friendship
• friendships
• Friends of the Earth
• friends with benefits
• friend zone
• frier
• friers
• fries
• Friese
• Friesian
• Friesic
• Friesish