arch-enemy /ärch-enˈə-mi/

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

• post-hypnotic
• post-hypnotic suggestion
• postiche
• postiches
• posticous
• postie
• posties
• postil
• postilion
• postilions
• postillate
• postillated
• postillates
• postillating
• postillation
• postillations
• postillator
• postillators
• postilled
• postiller
• postillers
• postilling
• postillion
• postillions
• postils