| 詳細 | しょうさい | details; particulars; specifics; detailed | n2 |
| 細い | ほそい | thin; slender; fine; unlucky | n5 |
| 細かい | こまかい | small; fine; minute; minor | n4 |
| 心細い | こころぼそい | helpless; forlorn; hopeless; unpromising | n1 |
| 仔細 | しさい | reasons; circumstances; details; particulars | n1 |
| 細君 | さいくん | (one's) wife; wife (of a peer or subordinate) | |
| 細 | さい | detail; details | n3 |
| 細長い | ほそながい | long and narrow | n3 |
| 細工 | さいく | work; workmanship; craftsmanship; handiwork | n1 |
| 細胞 | さいぼう | cell; cell (in an organization, esp. a communist party) | n1 |
| 些細 | ささい | trivial; trifling; slight; insignificant | n1 |
| 細か | こまか | small; fine; detailed; stingy | |
| 細々 | こまごま | minutely; in detail; with particular attention | |
| 繊細 | せんさい | dainty; delicate (e.g. fingers); fine; slim | n2 |
| 細る | ほそる | to get thin; to taper off | |
| 微細 | びさい | minute; fine; detailed; subtle | n1 |
| 細目 | さいもく | particulars; details; specified items | |
| 委細 | いさい | details; particulars; everything; every last detail | |
| 細心 | さいしん | meticulous; careful; discreet; scrupulous | n1 |
| 細める | ほそめる | to make narrow | n1 |
| 細道 | ほそみち | narrow path; narrow lane | |
| 細面 | ほそおもて | slender face | |
| 細部 | さいぶ | details; particulars | n2 |
| 子細 | しさい | reasons; circumstances; details; particulars | n1 |
| 精細 | せいさい | fine; minute; detailed; meticulous | |
| 細やか | ささやか | small; little; tiny; insignificant | n1 |
| 細菌 | さいきん | bacterium; bacteria; germ | n2 |
| 細身 | ほそみ | narrow (blade); slender (figure, build); thin | |
| 亜細亜 | アジア | Asia | |
| 小細工 | こざいく | intricate workmanship; delicate handiwork; cheap trick; petty trick | |
| 細引 | ほそびき | hempen cord; rope | |
| 明細 | めいさい | details; particulars; specifics; detailed | |
| 細字 | さいじ | small type or handwriting | |
| 細密 | さいみつ | detailed knowledge; finely detailed | |
| 細雨 | さいう | drizzle; misty rain | |
| 不細工 | ぶさいく | clumsy (work); awkward; poorly made; botched | |
| 細流 | さいりゅう | streamlet; brooklet; rivulet | |
| 零細 | れいさい | insignificant; trifling; paltry; cottage (industry) | n1 |
| か細い | かぼそい | thin; skinny; delicate; fragile | |
| 細民 | さいみん | the poor; paupers | |
| 細大 | さいだい | great and small; in detail; all | n4 |
| 蝋細工 | ろうざいく | waxwork | |
| 瑣細 | ささい | trivial; trifling; slight; insignificant | n1 |
| 細め | ほそめ | thinnish; somewhat narrow | |
| 巨細 | きょさい | large and small matters; particulars; details; greatness and smallness | |
| 細腕 | ほそうで | thin arm; slender arm; slender means; meager ability to earn a living | |
| 事細か | ことこまか | detailed; minute | |
| 竹細工 | たけざいく | bamboo work; bamboo ware | |
| 手細工 | てざいく | handiwork; handicraft; homemade | |
| 細作 | さいさく | spy; secret agent; ninja | |
| 細腰 | さいよう | slender hips; slim waist | n2 |
| 細微 | さいび | minute; meager; meagre; mean | |
| 細見 | さいけん | (visual) scrutiny; close inspection; detailed map; detailed guide | |
| 細々しい | こまごましい | minute; very fine; very small; annoying | |
| 細分 | さいぶん | subdivision (into small parts) | n1 |
| 細筆 | さいひつ | fine brush or pencil; writing brush with a fine point; (artistically) detailed writing; fine writing | |
| 細分化 | さいぶんか | subdivision; segmentation; fractionalization; fragmentation | |
| 細事 | さいじ | trifle; minor detail | |
| 細別 | さいべつ | subdivision | |
| 紙細工 | かみざいく | articles made out of paper (by hand); paperware | |
| 細緻 | さいち | minute; meticulous | |
| 細雪 | ささめゆき | light snow fall; small snow flakes | |
| やせ細る | やせほそる | to lose weight; to become thin; to wither away | |
| 細説 | さいせつ | detailed explanation | |
| 毛細管 | もうさいかん | capillary tube; capillary | |
| 細小 | さいしょう | minute; minuscule | |
| 細論 | さいろん | detailed discussion; detailed explanation | |
| 細切り | こまぎり | chopping finely; slicing up finely; something chopped up finely | |
| 細螺 | きさご | Umbonium costatum (species of sea snail) | |
| 細胞内 | さいぼうない | inside the cell; intracellular | |
| 毛細血管 | もうさいけっかん | capillary; capillary vessel | |
| きめ細かい | きめこまかい | smooth; meticulous; painstaking; detailed | |
| 単細胞 | たんさいぼう | single cell; simple-minded; one-track-minded | |
| 單細胞 | たんさいぼう | single cell; simple-minded; one-track-minded | |
| 明細書 | めいさいしょ | detailed statement; detailed account; minute description; specifications | |
| 極細 | ごくぼそ | superfine; extra-fine; extremely thin; extra-fine woollen yarn | |
| 高精細 | こうせいさい | high-definition; high-resolution | |
| きめ細か | きめこまか | smooth; meticulous; painstaking; detailed | |
| 細則 | さいそく | bylaws; by-laws; detailed regulations | n2 |
| 細胞死 | さいぼうし | cell death | |
| 角細工 | つのざいく | horn carving | |
| 古細菌 | こさいきん | archaea; archaebacteria | |
| 細目に | ほそめに | (open) a little; slightly; narrowly; (cut) finely | |
| 細書 | さいしょ | writing with small letters; text written with small, compact letters; detailed writing | n4 |
| 細石 | さざれいし | pebbles; gravel; boulder formed from gravel and sediment | |
| 細線 | さいせん | thin line | n1 |
| 細切れ | こまぎれ | small pieces; fragments; chopped meat; scraps (of beef, pork, etc.) | n1 |
| 多細胞 | たさいぼう | multicellular | |
| 樺細工 | かばざいく | cherry bark work; cherry bark art | |
| 細作り | ほそづくり | thinly made; slight build or stature | |
| 飴細工 | あめざいく | candy fashioned in human and animal forms; deceptive appearance; all show; empty suit | |
| 詳細情報 | しょうさいじょうほう | detailed information | |
| ガラス細工 | ガラスざいく | glasswork | |
| 細金 | さいきん | metallic foil cut into strips or other shapes to form decorative motifs; cutting a thin sheet of metal into shapes and affixing it with lacquer forming natural features (e.g. clouds) | n4 |
| 細帯 | ほそおび | narrow kimono sash; narrow obi | |
| 仔細に | しさいに | in detail; minutely; closely | |
| 先細る | さきぼそる | to taper off | |
| 細密画 | さいみつが | miniature (painting, portrait, etc.) | |
| 細菌性 | さいきんせい | bacterial; bacillary | |
| 肝細胞 | かんさいぼう | hepatocyte; liver cell | |