1. four times by a factor of four
  2. fortuitous lucky; occurring by happy chance
  3. fruitless unproductive of success
  4. freedom the condition of being free
  5. three times by a factor of three
  6. free time time that is free from duties or responsibilities
  7. River Thames the longest river in England
  8. fortress a fortified defensive structure
  9. vertex the highest point of something
  10. Fort Myers a town in southwest Florida
  11. fertilize provide with fertilizers or add nutrients to
  12. fried rice boiled rice mixed with scallions and minced pork or shrimp and quickly scrambled with eggs
  13. fertilise make fertile or productive
  14. fortitude strength of mind that enables one to endure adversity
  15. Artemis the virgin goddess of the hunt and the Moon
  16. Maritimes the collective name for the Canadian provinces of New Brunswick and Nova Scotia and Prince Edward Island
  17. vortex a powerful circular current of water
  18. fortissimo a direction in music; to be played very loudly
  19. Freddie Mac a corporation authorized by Congress to provide a secondary market for residential mortgages
  20. beard moss greenish grey pendulous lichen growing on trees