Answer:
Some adjectives that begin with letter R are:
  1. Rabbit
  2. rabid
  3. raccoon
  4. race
  5. racial
  6. racy
  7. radar
  8. Radiant
  9. radical
  10. radio
  11. ragged
  12. raggedy
  13. raging
  14. rainy
  15. Rakish
  16. rambunctious
  17. rampant
  18. Rancid.
  19. rapid
  20. rare
  21. raspberry
  22. Rascally,
  23. raspy
  24. rational
  25. ratty,
  26. raunchy
  27. Ravishing
  28. Raw
  29. Razor-sharp,
  30. reactionary
  31. ready
  32. real,
  33. realistic
  34. realized
  35. reasonable
  36. reassuring
  37. rebel
  38. rebellious,
  39. recent
  40. receptive
  41. reckless
  42. reclusive
  43. Recommendable,
  44. Recommended
  45. recondite
  46. record
  47. Recuperative
  48. red
  49. redundant
  50. Refined,
  51. reflective
  52. Refreshing,
  53. Regal
  54. regular
  55. Rejoicing,
  56. Rejuvenated,
  57. Rejuvenating
  58. relaxed
  59. Relaxing
  60. Reliable,
  61. relevant
  62. Reliable
  63. religious
  64. Relieved,
  65. Relished,
  66. Relishing
  67. remarkable
  68. remaining
  69. reminiscent
  70. renaissance
  71. Renewed,
  72. Renowned,
  73. rental
  74. replete
  75. Reputable
  76. reputed
  77. residential
  78. Resilient,
  79. resolute
  80. resonant
  81. Resounding,
  82. Resourceful
  83. respectable,
  84. respected
  85. Respectful
  86. respective,
  87. resplendent
  88. responsible
  89. Responsive
  90. Rested
  91. restful,
  92. Restive,
  93. restless
  94. restricted
  95. Restorative,
  96. retail,
  97. retarded,
  98. Retentive
  99. Reticent
  100. retractable
  101. retro
  102. reusable
  103. Rewarding,
  104. revealing
  105. Revered
  106. Reverent
  107. revolutionary
  108. Rhapsodic
  109. rhetorical
  110. Rich
  111. rickety
  112. Ridiculous
  113. right
  114. righteous,
  115. rightful
  116. Rigid
  117. rigorous
  118. ripe
  119. Risen
  120. Risible
  121. risky
  122. risque
  123. ritzy
  124. rival
  125. roasted
  126. Robotic
  127. robust
  128. rocking,
  129. rocky
  130. Rolled
  131. Rollicking
  132. rolling
  133. Romanian
  134. romantic
  135. roomy
  136. rose
  137. rosy
  138. rotatable
  139. Rotten
  140. Rotting.
  141. Rotund
  142. Rough
  143. round
  144. Rousing
  145. rowdy
  146. royal
  147. rubber
  148. ruby
  149. rude
  150. ruddy
  151. Rueful
  152. rugged
  153. Ruinous.
  154. Ruling
  155. rumbly
  156. rumply
  157. rundown
  158. runny,
  159. rural,
  160. Rushing
  161. Russian
  162. rustic
  163. rusty
  164. Ruthless
  165. Rutty.
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First answer by Notyouraveragedummy. Last edit by Notyouraveragedummy. Contributor trust: 392 [recommend contributor recommended]. Question popularity: 25 [recommend question].