ruthless rusty rustic rural rust rupture rumor rummage ruminate rumble ruinous rugged ruffian ruffle rueful rudimentary ruddy ruby rubble routine rout roundabout rotten rote robust roar roam rival rite ripple ripe rip riotous riot rinse rigor rim rigorous rigid rift ridicule riddle rhythm reward revoke revive revert reverence revenue reverent revelation reverberate retrieve retreat retract retort reticent retard retail reticence retain retaliate resume restore restoration restitution respite resource respiration respect resourceful resort resolve resolution resolute resist resilient resign residue reservoir residual reside resentment rescind requisition requisite repulsive repute repudiate repugnant reptile reprove reprisal reprehend repose replicate replica repellent repel repeal renown renowned renovation renovate renounce rendition rendezvous remote render remorseful remnant remorse remiss remedy remarkable reminiscence relief relish relinquish relic reliance relevant relentless release relapse reject rejuvenate reiterate rejoice reinforce reimburse rehearse rehabilitate regulation regulate regiment refute refund regime refuge refresh refrain reflection refined refine referee redundant redress redeem recycle recur recruit recreation reconstruct reconnaissance reconcile recompense recollection recoil recluse reclaim reckless reciprocal recipient recipe recession reception recess recede recall rebut recalcitrant rebuke rebuff rebellion rebel rear realm rebate raze ravenous rave ravage ration ratio ratify rash rapture rapport rapacious rap ransom ransack rank random rampant ramble raid ragged radiate rage rally radical radiant radiance racket rush out run wild run parallel to run out of run into rust away root in roll over rocking chair retentive power reward sb. return to life result in result from rough hands replace with renew a friendship relative speed reproductive capability removed from rich in REM (rapid eye movement) regardless of residential lot reflective glass reference point refer to reflective tape reduce to refuse site relevant to red cedar real estate raw sewage raw material rather than ready market raise money reference to rag paper reach its peak range from to railroad industry