せ
| 背 | せい | height, stature | 1843 1461 |
| 正 | せい | (logical) true, regular | 762-3 |
| 正確 | せいかく | accurate, punctuality, exactness, authenticity, veracity | |
| 正式 | せいしき | due form, official, formality | |
| 生 | せい | (1) life; birth (2) raw, unprocessed | 706 |
| 生産 | せいさん | production, manufacture | 1981 706 |
| 生物 | せいぶつ | raw food | |
| 生命 | せいめい | life, existence | |
| 性 | せい | sex, gender | 2027 1209 |
| 性格 | せいかく | character, personality | |
| 所為 | せい | cause, reason, fault | 2122 841 |
| 所為 | しょい | act, deed | |
| 税 | ぜい | toll, tax | 1265 |
| 税金 | ぜいきん | tax, duty | |
| 世紀 | せいき | century, era | 777 |
| 世間 | せけん | world, society | |
| 世話 | せわ | looking after, help, aid, assistance | |
| 請求 | せいきゅう | claim, demand, application, request | 2400 |
| 請願 | せいがん | petition | |
| 清潔 | せいけつ | clean, neat, unsoiled | |
| 清浄 | せいじょう | pure, clean | |
| 制限 | せいげん | restriction, restraint, limitation | 1169 |
| 制度 | せいど | system, institution, organization | |
| 制圧 | せいあつ | oppression; gaining total control | |
| 成功 | せいこう | success, hit | 1041 |
| 成人 | せいじん | adult | |
| 成績 | せいせき | results, record | |
| 成長 | せいちょう | growth, grow to adulthood | |
| 精神 | せいしん | mind, soul, heart, spirit, intention | 1267 |
| 精々 | せいぜい | at the most, at best, to the utmost, as much (far) as possible | |
| ~製 | ~せい | made of (in) | 1288 |
| 製造 | せいぞう | manufacture, production | |
| 製品 | せいひん | manufactured goods, finished goods | |
| 贅沢 | ぜいたく | luxury, extravagance | 2401 |
| 贅肉 | ぜいにく | excessive flash, flab | |
| 青年 | せいねん | youth, young man | 768 |
| 政府 | せいふ | government, administration | 1223 |
| 政治 | せいじ | politics; government | |
| 整理 | せいり | sorting, arrangement, adjustment, regulation | 848 |
| 整合 | せいごう | adjustment, integration | |
| 咳 | せき | cough | 2402 |
| 石炭 | せきたん | coal | 765 |
| 石油 | せきゆ | oil, petroleum, kerosene | |
| 責任 | せきにん | duty, responsibility | 1303 |
| 責務 | せきむ | duty, obligation | |
| 責める | せめる | to condemn, to blame, to criticize | 1303 |
| 説 | せつ | theory | 1124 |
| 説明 | せつめい | explanation | |
| 積 | せき | product | 1096 |
| 積極 | せっきょく | positive, progressive | |
| 積極的 | せっきょくてき | positive, active, proactive | |
| 積載 | せきさい | loading, carrying | |
| 設計 | せっけい | plan, design | 1292 |
| 設備 | せつび | equipment, device, facilities, installation | |
| 絶対 | ぜったい | absolute, unconditional, absoluteness | 1271 |
| 絶望 | ぜつぼう | despair, hopelessness | |
| 絶滅 | ぜつめつ | destruction, extinction | |
| セット | set | ||
| 節約 | せつやく | economizing, saving | 1100 |
| 節食 | せっしょく | eating lightly | |
| 是非 | ぜひ | certainly, without fail | 2403 |
| 善 | ぜん | good, goodness, right, virtue | 1356 |
| 善人 | ぜんにん | good people | |
| 善徳 | ぜんとく | virtues, integrity, justice | |
| 全 | ぜん | all, whole, entire, complete, overall, pan | 788 |
| 全員 | ぜんいん | all members (unanimity), all hands, the whole crew | |
| 全然 | ぜんぜん | (1) wholly, entirely, completely, (2) not at all (with neg. verb) | |
| 全体 | ぜんたい | whole, entirety, whatever (is the matter) | |
| 全国 | ぜんこく | country-wide, nation-wide, whole country, national | |
| 専攻 | せんこう | major subject, special study | 1374 |
| 専制 | せんせい | despotism, autocracy | |
| 専任 | せんにん | full-time service | |
| 先日 | せんじつ | the other day, a few days ago | 730 |
| 前者 | ぜんしゃ | the former (first of two) | 666 |
| 前進 | ぜんしん | advance, drive, progress | |
| センター | a center | ||
| 選択 | せんたく | selection, choice | 1138 |
| 選手 | せんしゅ | player in game | |
| 選集 | せんしゅう | selection | |
| 選曲 | せんきょく | chosen song |