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

• space charges
• spacecraft
• spacecrafts
• spaced
• spaced out
• spacefaring
• space heater
• space heaters
• space-heating
• Space Invaders®
• space lattice
• space lattices
• spaceless
• spaceman
• space medicine
• space medicines
• spacemen
• space opera
• space operas
• space out
• spaceplane
• spaceplanes
• space platform
• space platforms
• spaceport