Across
- 2. beyond the usual work hours
- 4. the amount produced in a given time
- 6. a train that runs underground
- 11. secretive; illegal
- 12. not notice
- 13. a submersible sea vessel
- 14. disguised
- 16. cloudy
Down
- 1. a wildly famous or talented person
- 3. grocery store
- 5. part of a whole group
- 6. faster than sound
- 7. too much; excessive
- 8. a mood or attitude behind words or actions
- 9. a neighborhood; an area of land split into lots
- 10. unexplainable
- 15. a plug in