arch-enemy /ärch-enˈə-mi/

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

• cross-lateral
• cross-laterality
• cross-laterals
• cross-leaved
• cross-legged
• crosslet
• crosslets
• crosslight
• cross-lighted
• crosslights
• cross-link
• cross-linked
• cross-linking
• cross-links
• crossly
• cross-magnetic
• cross-marketing
• cross-match
• cross-matched
• cross-matches
• cross-matching
• crossness
• crossnesses
• cross one's fingers
• cross one's heart