rubber rub rule ruin rug rude ruby rubbish royalty royal row routine rouse round rough rotten rotate rose rope root room roof romantic romance Roman roll route rod rock role rocket robot robe robbery robber rob roar road river rival risk rise ripe right rifle ring ridiculous ridge ride riddle rid rich rice ribbon rib reward revolutionary revolution review revenue revenge reveal retreat restore restaurant retire retain result restriction rest restrict resolve responsible responsibility respond respect resource resolution resolute resistance resist resign residence reservoir resent reserve resemblance research require request rescue republic republican representative reputation represent reporter report reply replace repetition repeat repay repair rent renew render remove remote remind remember remedy remarkable remainder remain reluctant remark religious religion relieve rely relief reliable relevant release relax relativity relative relation relate reject reinforce reign register regime regular regard region refuse refrigerator reform reflection reference reduction regret reflect refer reduce red recorder recruit record recovery recommend recover recognize recognition reckon reception receive recent receipt recall rebel reasonable reason rear reap really realize realization reality realistic readily real ready reading reach reader read react ray raw rational ratio rather rate rat rare rapid rank range raise raincoat rainbow rain railroad raid rarely radar rage radius radio radical rack racial race rabbit Russian Russia rail rush rural rumor ruler