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

Obviously pre-eminent

• flacons
• flaff
• flaffed
• flaffer
• flaffered
• flaffering
• flaffers
• flaffing
• flaffs
• flag
• flag-basket
• flag-baskets
• flag-captain
• flag-captains
• flag day
• flag days
• flag down
• flagella
• flagellant
• flagellantism
• flagellantisms
• flagellants
• Flagellata
• flagellate
• flagellated