| Level 4 vocabulary |
| 入れる | (v1) to put in/ to take in/ to bring in/ to let in/ to admit/ to introduce/ to commit (to prison)/ to usher |  |
| 入る | (v5r) to enter/ to break into/ to join/ to enroll/ to contain/ to hold/ to accommodate/ to have (an income |  |
| Level 3 vocabulary |
| 押し入れ | (n) closet/ (P) |  |
| 入院 | (n,vs) hospitalization/ (P) |  |
| 入学 | (n) entry to school or university/ matriculation/ (P) |  |
| Level 2 vocabulary |
| 入口 | (n) entrance/ gate/ approach/ mouth/ (P) |  |
| 入れ物 | (n) container/ case/ receptacle/ (P) |  |
| 気に入る | (v5r) to be pleased with/ to suit/ (P) |  |
| 記入 | (n,vs) entry/ filling in of forms/ (P) |  |
| 四捨五入 | (n) rounding up (fractions)/ (P) |  |
| 収入 | (n) income/ receipts/ revenue/ (P) |  |
| 侵入 | (n,vs) penetration/ invasion/ raid/ aggression/ trespass/ (P) |  |
| 出入り | (n) in and out/ coming and going/ free association/ income and expenditure/ debits and credit/ (P) |  |
| 手入れ | (n) repairs/ maintenance/ (P) |  |
| 取り入れる | (v1) to harvest/ to take in/ to adopt/ (P) |  |
| 入社 | (n,vs) entry to a company/ (P) |  |
| 入場 | (n) entrance/ admission/ entering/ (P) |  |
| 日の入り | (n) sunset/ (P) |  |
| 輸入 | (n,vs) importation/ import/ introduction/ (P) |  |
| Level 1 vocabulary |
| 受け入れ | (n) receiving/ acceptance |  |
| 受け入れる | (v1) to accept/ to receive/ (P) |  |
| 恐れ入る | (v5r) to be filled with awe/ to feel small/ to be amazed/ to be surprised/ to be disconcerted/ to be sorr |  |
| 介入 | (n,vs) intervention/ (P) |  |
| 加入 | (n,vs) becoming a member/ joining/ entry/ admission/ subscription/ affiliation/ adherence/ signing/ (P) |  |
| 購入 | (n,vs) purchase/ buy/ (P) |  |
| 仕入れる | (v1) to lay in stock/ to replenish stock/ to procure/ (P) |  |
| 新入生 | (n) freshman/ first-year student |  |
| 潜入 | (n) infiltration/ sneaking in/ (P) |  |
| 投入 | (n,vs) throw/ investment/ making (an electrical circuit) |  |
| 導入 | (n,vs) introduction/ bringing in/ leading in/ (P) |  |
| 入手 | (n,vs) obtaining/ coming to hand/ (P) |  |
| 入賞 | (n) winning a prize or place (in a contest)/ (P) |  |
| 入浴 | (n,vs) bathe/ bathing/ (P) |  |
| 納入 | (n,vs) payment/ supply/ (P) |  |
| 申し入れる | (v1) to propose/ to suggest |  |