arch-enemy /ärch-enˈə-mi/

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

• adrenalines
• adrenalins
• adrenals
• adrenergic
• adreno-
• adrenocorticotrophic
• adrenocorticotropic
• adrenoleukodystrophy
• Adriamycin
• adrift
• adroit
• adroiter
• adroitest
• adroitly
• adroitness
• Articulata
• articulate
• articulated
• articulated lorries
• articulated lorry
• articulately
• articulateness
• articulatenesses
• articulates
• articulating