Nemesis /nemˈi-sis/ (Gr myth)

1. The Greek goddess of retribution
2. (without cap) retributive justice
3. Something that cannot be achieved
4. A rival or opponent who cannot be beaten

• power structure
• power structures
• power suit
• power suits
• power take-off
• power tea
• power teas
• powertrain
• powertrains
• power unit
• power units
• nankin
• nankins
• nanna
• nannas
• nannied
• nannies
• nannoplankton
• nannoplanktons
• nanny
• nannygai
• nannygais
• nannyghai
• nanny goat
• nannying