arch-enemy /ärch-enˈə-mi/

1. A chief enemy
2. Satan (also arch-felˈon, arch-fiendˈ, arch-foeˈ)

• non-academic
• non-acceptance
• non-access
• non-accessible
• non-accidental
• non-accidental injury
• non-addictive
• non-administrative
• non-admission
• nonage
• nonaged
• nonagenarian
• nonagenarians
• nonagenary
• nonages
• nonagesimal
• nonagesimals
• non-aggression
• nonagon
• nonagonal
• nonagons
• non-alcoholic
• non-aligned
• non-alignment
• non-allergic