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

Obviously pre-eminent

• panoply
• panoptic
• panoptical
• panopticon
• panopticons
• panorama
• panorama head
• panorama heads
• panoramas
• panoramic
• moodier
• moodies
• moodiest
• moodily
• moodiness
• moodinesses
• moods
• moody
• moodying
• moody-mad
• mooed
• Moog synthesizer
• mooi
• mooing
• moo-juice