1. flap down throw violently
  2. flag down signal to stop
  3. flump down fall heavily
  4. fall down lose an upright position suddenly
  5. flea-bitten worn and broken down by hard use
  6. flush down flow freely
  7. flyblown spoiled and covered with eggs and larvae of flies
  8. clamp down repress or suppress (something regarded as undesirable)
  9. flippant showing an inappropriate lack of seriousness
  10. clampdown sudden restriction on an activity
  11. full-blown fully ripe; at the height of bloom
  12. voluptuous displaying luxury and furnishing gratification to the senses
  13. flat bone part of the sirloin next to the wedge bone
  14. wolf down eat hastily
  15. flatten make flat or flatter
  16. flip out react in an excited, delighted, or surprised way
  17. lay down institute, enact, or establish
  18. play down understate the importance or quality of
  19. plump down set (something or oneself) down with or as if with a noise
  20. Laputan not practical or realizable; speculative