1. reticent reluctant to draw attention to yourself
  2. reduced made less in size or amount or degree
  3. redoubled become much greater in intensity or size or amount
  4. red cent something of little value
  5. red lead a reddish oxide of lead (Pb3O4) used as a pigment in paints and in glass and ceramics
  6. redundant more than is needed, desired, or required
  7. rockslide a landslide of rocks
  8. red light the signal to stop
  9. reduce make smaller
  10. tercelet male hawk especially male peregrine or gyrfalcon
  11. root cellar an excavation where root vegetables are stored
  12. reducible capable of being reduced
  13. cancelled no longer planned or scheduled
  14. reductio (reduction to the absurd) a disproof by showing that the consequences of the proposition are absurd; or a proof of a proposition by showing that its negation leads to a contradiction
  15. reduviid a true bug: long-legged predacious bug living mostly on other insects; a few suck blood of mammals
  16. fruit salad salad composed of fruits
  17. reducer a substance capable of bringing about the reduction of another substance as it itself is oxidized; used in photography to lessen the density of a negative or print by oxidizing some of the loose silver
  18. Motacillidae pipits and wagtails
  19. mudslide a landslide of mud
  20. verticillate forming one or more whorls

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