facile princeps /fasˈi-lē prinˈseps or fakˈi-le prinˈkeps/

Obviously pre-eminent

• horse-coper
• horse-copers
• horse-couper
• horse-coupers
• horse-courser
• horse-coursers
• horsed
• horse-dealer
• horse-dealers
• horse-dealing
• horse-doctor
• horse-doctors
• mammographies
• mammographs
• mammography
• mammon
• mammonish
• mammonism
• mammonisms
• mammonist
• mammonistic
• mammonists
• mammonite
• mammonites
• mammons