Related Clues:
- Prefix from the Greek “oikos,” meaning “house”
- Energy-saving mode in some hybrid cars
- ___ Styler gel
- Prefix for 'friendly' or 'conscious'
- Prefix for 'friendly' or 'fascist'
- Prefix that's 36-Down minus a letter
- Fuel-saving mode in some cars
- Lead-in to freak or friendly
- ___-conscious (green)
- ___ mode (fuel-saving feature in newer cars)
- Prefix with hotel
- Environmentally friendly opening
- Environmentalist prefix
- Prefix for 'friendly' or 'system'
- __ hotel: sustainable lodging