| 1865 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 1876 | A New Dictionary of Kanji Usage |
| 112 | Classic Nelson (Andrew Nelson) |
| 1735 | Essential Kanji (P.G. O’Neill) |
| 1256 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 2251 | Japanese Names (P.G. O’Neill) |
| 1228 | Kanji and Kana (Spahn and Hadamitzky) |
| 1292 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 1820 | Kanji in Context (Nishiguchi and Kono) |
| 579 | Kodansha Compact Kanji Guide |
| 3731 | Kodansha Kanji Dictionary (Jack Halpern) |
| 1909 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 2592 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 1392 | Les Kanjis dans la tete (Yves Maniette) |
| 9205 | Morohashi |
| 3008 | New Japanese English Character Dictionary (Jack Halpern) |
| 1600 | New Nelson (John Haig) |
| 1380 | Remembering The Kanji (James Heisig) |
| 1480 | Remembering The Kanji, 6th edition (James Heisig) |
| 1251 | Tuttle Kanji Cards (Alexander Kask) |
seclude, confine to a room, deep, profound, secluded, faint, dark, tranquil, calm
Jōyō kanji, taught in junior high
JLPT level N1
1996 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 幽霊 【ユウレイ】 ghost, specter, spectre, apparition, phantom
- 憂鬱 【ユウウツ】 depression, melancholy, dejection, gloom, despondency
- 幽々 【ユウユウ】 deep, dark
- 帰幽 【キユウ】 death
Kun reading compounds
- 微か 【かすか】 faint, dim, weak, slight, vague, indistinct, hazy, poor, wretched, meagre, meager, scanty
Readings
- Korean:
- yu
Spanish
- profundo
- recluir
- confinar
- el más allá
Portuguese
- isolar
- confina para um quarto
French
- isoler
- confiné
- profond
- obscur
- isolé
- faible
- sombre
- tranquille
- calme
| 1276 | 2001 Kanji |
| 3o6.6 | The Kanji Dictionary |
| 3-2-7 | SKIP code |
| 2277.0 | Four corner code |
| 1-45-09 | JIS X 0208-1997 kuten code |
| 5e7d | Unicode hex code |
Jōyō kanji, taught in junior high
2349 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 冥福 【メイフク】 happiness in the next world, heavenly bliss
- 瞑想 【メイソウ】 meditation (with closed eyes), contemplation
- 晦冥 【カイメイ】 darkness
- 天地晦冥 【テンチカイメイ】 the world is covered in darkness, all is plunged into darkness
- 冥福 【メイフク】 happiness in the next world, heavenly bliss
- 冥利 【ミョウリ】 providence, luck, favor, favour, advantage
Kun reading compounds
- 暗い 【くらい】 dark, gloomy, murky, depressed, dispirited, down in the dumps, dark (mood), dark (in colour), dull, ill-boding, dark (e.g. past), suspicious, unlikely (to succeed), hopeless, unpromising, unfamiliar (with), ignorant (of)
Readings
- Korean:
- myeong
Spanish
- oscuro
- incomprensible
- profundo
- el más allá
Portuguese
French
| 630 | Classic Nelson (Andrew Nelson) |
| 1158 | Japanese Names (P.G. O’Neill) |
| 1522 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 2613 | Kodansha Kanji Dictionary (Jack Halpern) |
| 1810 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 1588 | Morohashi |
| 405 | New Nelson (John Haig) |
| 2841 | Remembering The Kanji (James Heisig) |
| 322 | Remembering The Kanji, 6th edition (James Heisig) |
| 2i8.2 | The Kanji Dictionary |
| 2-2-8 | SKIP code |
| 3780.0 | Four corner code |
| 1-44-29 | JIS X 0208-1997 kuten code |
| 51a5 | Unicode hex code |
world, boundary
- On:
- カイ
Jōyō kanji, taught in grade 3
JLPT level N4
158 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 界 【カイ】 community, circles, world, kingdom, erathem, field (electrical), border, boundary, division
- 界隈 【カイワイ】 neighborhood, neighbourhood, vicinity
- 球界 【キュウカイ】 the baseball world
- 経済界 【ケイザイカイ】 economic world, financial circles, business community
Readings
- Korean:
- gye
Spanish
- borde
- frontera
- extensión
- ámbito
Portuguese
- mundo
French
- monde
| 170 | A Guide To Reading and Writing Japanese (Florence Sakade) |
| 260 | A Guide To Reading and Writing Japanese 3rd edition (Henshall, Seeley and De Groot) |
| 240 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 170 | A New Dictionary of Kanji Usage |
| 2998 | Classic Nelson (Andrew Nelson) |
| 269 | Essential Kanji (P.G. O’Neill) |
| 223 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 967 | Japanese Names (P.G. O’Neill) |
| 3.8 | Japanese for Busy People |
| 454 | Kanji and Kana (Spahn and Hadamitzky) |
| 461 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 157 | Kanji in Context (Nishiguchi and Kono) |
| 1336 | Kodansha Compact Kanji Guide |
| 3172 | Kodansha Kanji Dictionary (Jack Halpern) |
| 1632 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 2220 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 257 | Les Kanjis dans la tete (Yves Maniette) |
| 21775 | Morohashi |
| 2563 | New Japanese English Character Dictionary (Jack Halpern) |
| 3739 | New Nelson (John Haig) |
| 251 | Remembering The Kanji (James Heisig) |
| 266 | Remembering The Kanji, 6th edition (James Heisig) |
| 164 | The Kanji Way to Japanese Language Power (Dale Crowley) |
| 320 | Tuttle Kanji Cards (Alexander Kask) |
| 3654 | 2001 Kanji |
| 5f4.7 | The Kanji Dictionary |
| 2-5-4 | SKIP code |
| 6022.8 | Four corner code |
| 1-19-06 | JIS X 0208-1997 kuten code |
| 754c | Unicode hex code |