• 内ない

  within ..., inside ...

• 内うち

  inside, within

• 内陸ないりく

  inland

• 内戦ないせん

  civil war

• 内向ないこう

  introversion

• 内需ないじゅ

  domestic demand

• 内野ないや

  infield, diamond

• 内部ないぶ

  interior, inside, internal

• 内示ないじ

  unofficial announcement

• 内臓ないぞう

  internal organs, viscera

• 内側うちがわ

  inside, interior, inner part

• 内装ないそう

  interior design, interior, upholstery

• 内気うちき

  shy, bashful, timid, reserved

• 内諾ないだく

  informal consent, private consent

• 内務ないむ

  internal or domestic affairs

• 内海ないかい

  inland sea, inlet, gulf, bay

• 内省ないせい

  introspection, reflection on one's self

• 内科ないか

  internal medicine

• 内申ないしん

  unofficial report, confidential report

• 内角ないかく

  interior angle, internal angle

• 内閣ないかく

  cabinet (of a government), ministry

• 内堀うちぼり

  inner moat, moat within the castle walls

• 内蔵ないぞう

  internal (e.g. disk), built-in, equipped (with)

• 内線ないせん

  phone extension, indoor wiring, inner line

• 内政ないせい

  domestic affairs, internal administration

• 内容ないよう

  contents, content, substance, matter, detail, import

• 内面ないめん

  inside, interior

• 内情ないじょう

  internal conditions, true state of affairs

• 内規ないき

  private regulations, bylaws, internal rules, tradition

• 内乱ないらん

  civil war, insurrection, rebellion, domestic conflict

• 内包ないほう

  connotation, comprehension, intension

• 内定ないてい

  tentative decision, unofficial offer (esp. job offer), informal offer

• 内訳うちわけ

  itemization (of expenses), the items, breakdown, classification

• 内実ないじつ

  the facts, the truth, the true state of affairs

• 内偵ないてい

  secret investigation, private enquiry, private inquiry, reconnaissance, scouting

• 内々うちうち

  private, confidential, informal, secret, (within the) family circle, (on the) inside

• 内心ないしん

  inner thoughts, real intention, inmost heart, one's mind

• 内外ないがい

  inside and outside, interior and exterior

• 内緒ないしょ

  secrecy, confidentiality, privacy, secret

• 内幕うちまく

  lowdown, inside information, hidden circumstances, inside facts, inner workings, undisclosed circumstances

• 内輪うちわ

  family circle, one's circle (of friends, co-workers, etc.), one's fellows, in-group

• 内職ないしょく

  side job (outside of one's main employment), side gig, side hustle

• 邸内ていない

  grounds, premises

• 店内てんない

  inside of a store (restaurant, café, etc.), store interior, on the premises

• 家内かない

  (my) wife

• 都内とない

  within the (Tokyo) metropolitan area

• 身内みうち

  relatives, one's family

• 県内けんない

  within the prefecture

• 場内じょうない

  in-house, (on) the grounds, (in) the premises, hall, theatre, theater

• 車内しゃない

  inside a car (train, bus, etc.)