arch-enemy /ärch-enˈə-mi/

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

• plague-stricken
• plaguey
• plaguier
• plaguiest
• plaguily
• plaguing
• plaguy
• plaice
• plaice-mouth
• plaice-mouths
• plaices
• plaid
• Plaid Cymru
• plaided
• plaiding
• plaidings
• plaidman
• plaidmen
• plaid-neuk
• plaid-neuks
• plaids
• plain
• plainant
• plainants
• plain as a pikestaff