し
| 四 | し | four | 569 |
| 氏 | し | family name, lineage, birth | 1073 |
| 氏名 | しめい | full name, identity | |
| 幸せ | しあわせ | happiness, good fortune, luck, blessing | 828 |
| ジーンズ | jeans | ||
| ジェット機 | ジェットき | jet aeroplane | 1064 |
| 直 | じき | earnestly, immediately, exactly | 644 |
| 直に | じかに | immediately, readily, directly | |
| しかも | moreover, furthermore, nevertheless, and yet | ||
| 叱る | しかる | to scold | 2371 |
| 式 | しき | equation, formula, ceremony | 832 |
| 時期 | じき | time, season, period | 655 |
| 時刻 | じこく | instant, time, moment | |
| 頻りに | しきりに | frequently, repeatedly, incessantly, eagerly | 2372 |
| 刺激 | しげき | stimulus, impetus, incentive | 2373 |
| 事件 | じけん | event, affair, incident | 781 |
| 事実 | じじつ | fact, truth, reality | |
| 事情 | じじょう | circumstances, consideration, conditions, situation, reasons | |
| 事態 | じたい | situation, present state of affairs | |
| 自殺 | じさつ | suicide | 651 |
| 自身 | じしん | by oneself, personally | |
| 自然 | しぜん | nature, spontaneous | |
| 自動 | じどう | automatic, self-motion | |
| 自慢 | じまん | pride, boast | |
| 支給 | しきゅう | payment, allowance | 1222 |
| 支出 | ししゅつ | expenditure, expenses | |
| 支度 | したく | preparation | |
| 支店 | してん | branch store (office) | |
| 支配 | しはい | rule, control, direction | |
| 支払 | しはらい | payment | |
| 支払う | しはらう | to pay | |
| 詩 | し | poem, verse of poetry | 2073 927 |
| 詩人 | しじん | poet | |
| 沈む | しずむ | to sink, to feel depressed | |
| 思想 | しそう | thought, idea | 687 |
| 舌 | した | tongue | 1284 |
| 次第 | しだい | (1) order, precedence, (2) circumstances, (3) immediate(ly) | 866 |
| 従う | したがう | to abide (by the rules), to obey, to follow, to accompany | 1392 |
| 従って | したがって | therefore, consequently, in accordance with | |
| 親しい | したしい | intimate, close (e.g. friend) | 647-2 |
| 七 | しち | seven | 737 |
| 質 | しつ | quality, nature (of person) | 1309 |
| 質問 | しつもん | question; inquiry | |
| 失業 | しつぎょう | unemployment | 1019 |
| 失望 | しつぼう | disappointment, despair | |
| 失格 | しっかく | disqualification, elimination | |
| 失礼 | しつれい | discourtesy | |
| 実は | じつは | as a matter of fact, by the way | 817 |
| 実に | じつに | indeed, truly, surely | |
| 実験 | じっけん | experiment | |
| 実現 | じつげん | implementation, materialization, realization | |
| 実行 | じっこう | practice, performance, execution (e.g. program), realization | |
| 実際 | じっさい | practical, actual condition, status quo | |
| 実施 | じっし | enforcement, enact, put into practice, carry out, operation | |
| じっと | fixedly, firmly, patiently, quietly | ||
| 指導 | しどう | leadership, guidance, coaching | 846 |
| 指弾 | しだん | criticism; blame; rejection | |
| 品 | しな | thing, article, goods, dignity, article (goods), counter for meal courses | 807 |
| 品切れ | しなぎれ | out of stock, stock rupture | |
| 芝居 | しばい | play, drama | 2374 |
| 芝生 | しばふ | lawn | |
| 屡々 | しばしば | often, again and again, frequently | 2375 |
| 死亡 | しぼう | death, mortality | 2024 868 |
| 資源 | しげん | resources | 1307 |
| 資本 | しほん | funds, capital | |
| 仕舞い | しまい(終わり) | end, termination | 782 |
| 仕舞う | しまう(終わる) | to finish, to close, to do something completely | |
| 仕込み | しこみ | training; stocking up; preparation | |
| しまった(感) | Damn it! | ||
| 姉妹 | しまい | sisters | 649 |
| 事務 | じむ | business, office work | 781 |
| 事務所 | じむしょ | office, bureau | |
| 示す | しめす | to denote, to show, to point out, to indicate | 1260 |
| 占める | しめる | to comprise, to account for; to hold, to occupy | 2376 |
| 下 | しも | under, below, beneath | |
| 下の句 | しものく | last part of a poem | |
| 霜 | しも | frost | 2377 |
| 霜解け | しもどけ | thawing | |
| じゃあ | well, well then | ||
| 借金 | しゃっきん | debt, loan, liabilities | 976 |
| 喋る | しゃべる | to talk, to chat, to chatter | 2378 |
| 邪魔 | じゃま | hindrance, intrusion | 2379 |
| 邪悪 | じゃあく | wicked; evil |