| 内容 | ないよう | contents; content; substance; matter | n4 |
| 案内 | あんない | guidance; leading (the way); showing around; information | n4 |
| 国内 | こくない | within the country; inside the county; domestic; home | n3 |
| 内 | うち | inside; within; while (e.g. one is young); during | n5 |
| 内部 | ないぶ | interior; inside; internal | n2 |
| 室内 | しつない | indoor; inside the room | n3 |
| 内心 | ないしん | inner thoughts; real intention; inmost heart; one's mind | n1 |
| 家内 | かない | (my) wife; inside the home; one's family | n3 |
| 境内 | けいだい | grounds (esp. of shrines and temples); compound; churchyard; precincts | n1 |
| 市内 | しない | in the city; within the city | n3 |
| 内側 | うちがわ | inside; interior; inner part | n3 |
| 内外 | ないがい | inside and outside; interior and exterior; inside and outside the country; home and abroad | n1 |
| 町内 | ちょうない | neighborhood; neighbourhood; street; block | n3 |
| 身内 | みうち | relatives; one's family; friends; members of the same organization | |
| 内々 | うちうち | private; confidential; informal; secret | |
| 内地 | ないち | within the borders of a country; domestic soil; inland; interior | |
| 内閣 | ないかく | cabinet (of a government); ministry | |
| 内儀 | ないぎ | your wife; his wife; secret meeting; secrecy | |
| ご案内 | ごあんない | guidance; leading (the way); showing around; information | |
| 内証 | ないしょ | secrecy; confidentiality; privacy; secret | n3 |
| 社内 | しゃない | within a company; in-house; within a shrine; shrine precincts | n2 |
| 内輪 | うちわ | family circle; one's circle (of friends, co-workers, etc.); one's fellows; in-group | |
| 内面 | ないめん | inside; interior; (within) one's mind; one's soul | n1 |
| 構内 | こうない | premises; grounds; campus; compound | n1 |
| 内気 | うちき | shy; bashful; timid; reserved | |
| 体内 | たいない | interior of the body | n2 |
| 屋内 | おくない | indoors | n3 |
| 車内 | しゃない | inside a car (train, bus, etc.) | n3 |
| 内職 | ないしょく | side job (outside of one's main employment); side gig; side hustle; homeworking | |
| 河内 | ハノイ | Hanoi (Vietnam) | |
| 城内 | じょうない | inside of a castle; area surrounded by castle walls | |
| 内密 | ないみつ | privacy; secrecy; confidentiality | |
| 内科 | ないか | internal medicine; department of internal medicine | n3 |
| 場内 | じょうない | in-house; (on) the grounds; (in) the premises; hall | |
| 内省 | ないせい | introspection; reflection on one's self | n1 |
| 内的 | ないてき | inner; intrinsic; mental; inherited | n1 |
| 山内 | さんない | in the mountains; within the grounds of a temple | |
| 内臓 | ないぞう | internal organs; viscera | n2 |
| 胎内 | たいない | interior of the womb (of a pregnant woman); interior of the uterus; interior of a Buddhistic statue | n2 |
| 圏内 | けんない | inside (a region, area, etc.); within the range (of); within the sphere (of influence, etc.) | n1 |
| 内蔵 | ないぞう | internal (e.g. mechanism, feature); built-in; equipped (with) | n2 |
| 県内 | けんない | within the prefecture | n2 |
| 不案内 | ふあんない | ignorance; inexperience; unfamiliarity | |
| 領内 | りょうない | (within a) territory; domains | |
| 瀬戸内海 | せとないかい | Seto Inland Sea; Inland Sea | |
| 寺内 | じない | inside a temple | |
| 内緒 | ないしょ | secrecy; confidentiality; privacy; secret | n3 |
| 店内 | てんない | inside of a store (restaurant, café, etc.); store interior; on the premises | |
| 都内 | とない | within the (Tokyo) metropolitan area | |
| 国内外 | こくないがい | inside and outside the country; domestic and foreign | |
| 年内 | ねんない | remainder of the year; rest of the year | n2 |
| 内実 | ないじつ | the facts; the truth; the true state of affairs; in truth | n1 |
| 内務省 | ないむしょう | Home Ministry; Department of the Interior (US, etc.); Home Office (UK); Ministry of Home Affairs (Japan, pre-1947) | |
| 館内 | かんない | inside a library, museum, cinema, etc.; on the premises | n3 |
| 内情 | ないじょう | internal conditions; true state of affairs | |
| 道案内 | みちあんない | guidance; showing the way; guide; guidepost | |
| 内海 | ないかい | inland sea; inlet; gulf; bay | |
| 内幕 | うちまく | lowdown; inside information; hidden circumstances; inside facts | |
| 内在 | ないざい | to be inherent (in); to reside (in); to be immanent (in); to be intrinsic | n1 |
| 内装 | ないそう | interior design; interior; upholstery | n1 |
| 内訳 | うちわけ | itemization (of expenses); the items; breakdown; classification | n1 |
| 内弟子 | うちでし | private pupil; apprentice | |
| 内乱 | ないらん | civil war; insurrection; rebellion; domestic conflict | |
| 宮内 | くない | inside the Imperial Palace; Department of the Imperial Household | |
| 内通 | ないつう | secret communication (with the enemy); collusion; betrayal; adultery | |
| 松の内 | まつのうち | New Year's Week (festivities) | |
| 内裏 | だいり | imperial palace; festival dolls representing the emperor and the empress | n2 |
| 内意 | ないい | intention; personal opinion | |
| 内懐 | うちぶところ | inside pocket; bosom; (one's) real intentions; inner thoughts | |
| 区内 | くない | in a ward; within the ward; within the zone; within the district | |
| 畿内 | きない | Kinai (the five provinces in the immediate vicinity of Kyoto) | |
| 内閣府 | ないかくふ | Cabinet Office | |
| 内務 | ないむ | internal or domestic affairs | |
| 参内 | さんだい | palace visit | |
| 内庭 | うちにわ | inner court; quadrangle | |
| 園内 | えんない | inside the kindergarten; inside the zoo; inside the garden; inside the park | |
| 新内 | しんない | type of jōruri recitation | |
| 内陣 | ないじん | inner sanctum; inner temple; inner shrine; sanctuary | |
| 内定 | ないてい | tentative decision; unofficial offer (esp. job offer); informal offer | |
| 手の内 | てのうち | palm (of one's hand); skill; (in one's) grip; (under one's) control | |
| 院内 | いんない | inside the House; inside the Diet; inside the hospital | |
| 府内 | ふない | within the prefecture (of Kyoto or Osaka); within the town limits of Edo | |
| 内大臣 | ないだいじん | Lord Keeper of the Privy Seal (1885-1945); Minister of the Interior (669-1868) | |
| 内政 | ないせい | domestic affairs; internal administration | n1 |
| 港内 | こうない | inside the harbour; inside the harbor | n1 |
| 内国 | ないこく | home country | |
| 船内 | せんない | on-board ship; inboard | |
| 内の人 | うちのひと | my husband; one's family; family member | |
| 管内 | かんない | within the jurisdiction (of); one's jurisdiction; in a pipe | n3 |
| 御内 | おうち | your home; your family; their home; their family | |
| 湾内 | わんない | inside the bay | |
| 内包 | ないほう | connotation; comprehension; intension; inclusion | |
| 内奥 | ないおう | recesses (of one's mind, heart, etc.); depths; innermost parts | |
| 校内 | こうない | within a school | n1 |
| 内所 | ないしょ | secrecy; confidentiality; privacy; secret | n3 |
| 幕内 | まくうち | makuuchi; top division (of professional sumo) | |
| 内攻 | ないこう | retrocession; (disease) settling in the internal organs; becoming pent-up (of emotions); accumulation (of anger, frustration, etc.) | |
| 手内職 | てないしょく | manual piecework done at home | |
| 海内 | かいだい | the whole country | |
| 内命 | ないめい | private or secret orders | |