quidam /kwīˈ or kwēˈdam/

1. Somebody
2. A certain person

• pontoons
• ponts
• ponty
• pony
• pony carriage
• pony carriages
• pony engine
• pony engines
• pony express
• ponying
• ponyskin
• ponyskins
• ponytail
• ponytails
• pony-trekking
• Ponzi scheme
• Ponzi schemes
• ponzu
• ponzus
• poo
• pooch
• pooches
• pood
• poodle
• poodle-dog