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

Obviously pre-eminent

• hasted
• hasten
• hastened
• hastener
• hasteners
• hastening
• hastens
• hastes
• hastier
• hastiest
• hastily
• hastiness
• hastinesses
• hasting
• hastings
• hasty
• hasty pudding
• hasty puddings
• hasty-witted
• hat
• hatable
• hatband
• hatbands
• hatbox
• hatboxes