arch-enemy /ärch-enˈə-mi/

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

• windowpane
• windowpanes
• windows
• Windows
• window sash
• window sashes
• window screen
• window screens
• window seat
• window seats
• window-shop
• window-shopped
• window-shopper
• window-shoppers
• window-shopping
• window-shops
• windowsill
• windowsills
• window tax
• window taxes
• wind park
• wind parks
• windpipe
• windpipes
• wind power