| Kanji 漢字 / Romaji 音韻 | Kana / Hiragana / Phonetic | Definition |
| ロットサイズ | ろっとさいず | lot size (19) |
| rottosaizu | rottosaizu |
| |
| ロット生産 | ろっとせいさん | lot production (19) |
| rotto seisan | rottoseisan |
| |
| ロットワイル | (p) Rottweil |
| rottowairu |
| |
| ロットー | (u) Lotto |
| rotto^ |
| |
| ロッツ | (u) Lotz |
| rottsu |
| |
| ロッツェ | (u) Lotze |
| rottsue |
| |
| ロッツォル | (u) Rotzoll |
| rottsuoru |
| |
| ロッツラー | (u) Rotsler |
| rottsura^ |
| |
| ろう | ろう | brazing filler metal (8) |
| rou | rou |
| |
| 楼 | ろう | (n) tower / turret / lookout / belvedere |
| rou | rou |
| |
| 労 | ろう | labor / toil / trouble / striving / putting (someone) to work / thanking (someone for their efforts) / comforting |
| rou | rou |
| |
| 老 | ろう | (n) old age / age / old people / the old / the aged |
| rou | rou |
| |
| 蝋 | ろう | (n) wax |
| rou | rou |
| |
| 僂 | ろう | bend over |
| rou | rou |
| |
| ロウ | (u) Law / Loew / Low / Lowe / Rowe |
| rou |
| |
| 苣木 | ちゃのき | Chanoki (p) |
| ߤ tei | rou |
| |
| 聾唖 | ろうあ | (n) (1) deafness / (2) deaf-mute / deaf and dumb |
| roua | roua |
| |
| 聾唖学校 | ろうあがっこう | school for the deaf / deaf and dumb school |
| roua gakkou | rouagakkou |
| |
| 聾唖者 | ろうあしゃ | deaf and mute person |
| roua mono | rouasha |
| |
| ロウアー | (u) Lower |
| roua^ |
| |
| 老婆 | ろうば | (n) old woman |
| rouba | rouba |
| |
| 狼狽 | ろうばい | (n) confusion |
| roubai | roubai |
| |
| 蝋梅 | ろうばい | (n) Japanese allspice |
| rou ume | roubai |
| |
| 臘梅 | ろうばい | (n) Japanese allspice |
| rou ume | roubai |
| |
| 牢番 | ろうばん | (n) prison guard / jailer |
| rou ban | rouban |
| |
| 老婆心 | ろうばしん | (n) concern |
| roubashin | roubashin |
| |
| ロウバーン | (p) Roebourne (Australia) |
| rouba^n |
| |
| 老母 | ろうぼ | (n) old mother / aged mother |
| rou haha | roubo |
| |
| 老僕 | ろうぼく | (n) elderly servant |
| rou boku | rouboku |
| |
| 老木 | ろうぼく | (n) old tree |
| rouboku | rouboku |
| |
| 老病 | ろうびょう | (n) infirmities of old age |
| rou byou | roubyou |
| |
| 労賃 | ろうちん | hire |
| rouchin | rouchin |
| |
| 労賃 | ろうちん | (n) wages |
| rouchin | rouchin |
| |
| 壟断 | ろうだん | monopoly |
| rou dan | roudan |
| |
| 漏電 | ろうでん | (n) leakage / short circuit / power failure |
| rouden | rouden |
| |
| 朗読 | ろうどく | reading aloud / recitation |
| roudoku | roudoku |
| |
| ロウドン | (u) Rowdon |
| roudon |
| |
| 労働 | ろうどう | labor / toil |
| roudou | roudou |
| |
| 労働 | ろうどう | (n) manual labor / toil / work |
| roudou | roudou |
| |
| 労動 | ろうどう | (oK) (n) manual labor / toil / work |
| roudou | roudou |
| |