1. for a while for a short time
  2. frail physically weak
  3. free will power of making choices unconstrained by external agencies
  4. feral wild and menacing
  5. freewill done of your own accord
  6. freewheel a clutch that allows wheels to turn freely
  7. four-wheel of or relating to vehicles with four wheels
  8. fire wheel annual of central United States having showy long-stalked yellow flower heads marked with scarlet or purple in the center
  9. fire-wheel annual of central United States having showy long-stalked yellow flower heads marked with scarlet or purple in the center
  10. farewell an acknowledgment or expression of goodwill at parting
  11. virile characteristic of a man
  12. firewall a flame-resistant barrier in a building or vehicle
  13. worthwhile sufficiently valuable to justify the investment of time
  14. ferrule a metal cap or band placed on a wooden pole to prevent splitting
  15. ferule a switch used to punish children
  16. frill a strip of pleated material used as a decoration or a trim
  17. fragile easily broken or damaged or destroyed
  18. ferial of or relating to or being a feria
  19. warily in a manner marked by keen caution and watchful prudence
  20. viral relating to or caused by a virus