Clue: Synfuel source

Answer: SHALE

Length: 5

---

Similar Clues:

• Source of sudden understanding (EYEOPENER with 9 letters)
• Google income sources (ADS with 3 letters)
• Juice source (e.g. APPLE with 5 letters)
• Book source (PUBLISHINGHOUSE with 15 letters)
• Iron or gold source (ORE with 3 letters)
• Antioxidant source (e.g. GREENTEA with 8 letters)
• Fuel sources (e.g. ENERGYBARS with 10 letters)
• Power source (e.g. ATOM with 4 letters)
• Sketch source (SNL with 3 letters)
• Source of red or white (PINOT with 5 letters)