1. for free without payment
  2. forever for a limitless time
  3. carefree without trouble or worry
  4. fir tree any of various evergreen trees of the genus Abies
  5. fat-free without fat or fat solids
  6. forfeit lose the right to or lose by some error, offense, or crime
  7. former the first of two or the first mentioned of two
  8. forefather the founder of a family
  9. forgiver a person who pardons or forgives or excuses a fault or offense
  10. referee the official in a sport who is expected to ensure fair play
  11. forgery criminal falsification by making or altering an instrument
  12. fire tree a terrestrial evergreen shrub or small tree of western Australia having brilliant yellow-orange flowers; parasitic on roots of grasses
  13. forlorn marked by or showing hopelessness
  14. for sure definitely or positively
  15. forefoot a front foot of a quadruped
  16. forrader in a forward direction
  17. fork over to surrender someone or something to another
  18. forefront the part that is most forward or nearest the viewer
  19. forger someone who makes copies illegally
  20. forfeiture something that is lost or surrendered as a penalty