arch-enemy /ärch-enˈə-mi/

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

• pessima
• pessimal
• pessimism
• pessimisms
• pessimist
• pessimistic
• pessimistical
• pessimistically
• pessimists
• pessimum
• pest
• Pestalozzian
• pester
• pestered
• pesterer
• pesterers
• pestering
• pesteringly
• pesterment
• pesterments
• pesterous
• pester power
• pester powers
• pesters
• pestful