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

Obviously pre-eminent

• by and by
• by-and-by
• by and large
• by a nose
• by any means
• by appointment
• by appointment to
• by a short head
• by-blow
• by-blows
• bycatch
• bycatches
• by chance
• by choice
• by cock and pie
• bycoket
• bycokets
• by-corner
• by-corners
• by courtesy of
• by default
• by definition
• by degrees
• by design
• by-drinking