| A | B |
| rampage | (n) a course of wild behavior; (v) to move wildly |
| rampant | wild; unrestrained |
| rant | rave; speak wildly |
| rapacious | plundering; greedy; ravenous |
| rapprochement | reconciliation; to make friendly again |
| ratiocination | logical, methodical, rational thinking |
| rationalize | to make rational/logical; to justify |
| ravage | plunder; to rob violently (during battle) |
| ravenous | hungry; greedy |
| raze | to tear down; demolish |
| realm | kingdom |
| recalcitrant | stubborn |
| recapitulate | to repeat in a more concise form; recap |
| reciprocal | mutual; both people feel the same towards each other |
| recondite | profound; or hidden and concealed |
| rectify | to correct; set right |
| recumbent | lying down |
| redolent | fragrant |
| redoubtable | formidable |
| redress | to set right; remedy |
| redundant | repetitious; done over and over many times |
| refractory | disobedient; stubborn |
| refulgent | shining; radiant (face) |
| refute | to disprove |
| reiterate | repeat |
| relevant | having significant importance |
| remorse | bitter regret; guilt |
| remorseless | without regret or guilt |
| renascent | coming into being again |
| reticent | silent; restrained in behavior |
| ruddy | having a healthy, reddish color (good bloody) |
| ruminate | to think a lot about; cogitate |