1. drop off fall or diminish
  2. drop-off a change downward
  3. drop out give up in the face of defeat of lacking hope; admit defeat
  4. rip off deprive somebody of something by deceit
  5. dropout someone who quits school before graduation
  6. draw off remove by drawing or pulling
  7. rip-off the act of stealing
  8. rope off divide by means of a rope
  9. dope off change from a waking to a sleeping state
  10. top off fill to the point of almost overflowing
  11. drop-leaf a hinged leaf on a table that can be raised and supported by a bracket
  12. drowse off change from a waking to a sleeping state
  13. throw off get rid of
  14. drive off force to go away
  15. tradeoff an exchange that occurs as a compromise
  16. dropsy swelling from excessive accumulation of watery fluid in cells, tissues, or serous cavities
  17. drop by visit informally and spontaneously
  18. drop let fall to the ground
  19. dropper pipet consisting of a small tube with a vacuum bulb at one end for drawing liquid in and releasing it a drop at a time
  20. drop in visit informally and spontaneously