| 550 | A Guide To Reading and Writing Japanese (Florence Sakade) |
| 644 | A Guide To Reading and Writing Japanese 3rd edition (Henshall, Seeley and De Groot) |
| 615 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 690 | A New Dictionary of Kanji Usage |
| 130 | Classic Nelson (Andrew Nelson) |
| 560 | Essential Kanji (P.G. O’Neill) |
| 663 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 149 | Japanese Names (P.G. O’Neill) |
| 1207 | Kanji and Kana (Spahn and Hadamitzky) |
| 1270 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 1096 | Kanji in Context (Nishiguchi and Kono) |
| 1152 | Kodansha Compact Kanji Guide |
| 2436 | Kodansha Kanji Dictionary (Jack Halpern) |
| 1230 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 1695 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 134 | Les Kanjis dans la tete (Yves Maniette) |
| 17088 | Morohashi |
| 1937 | New Japanese English Character Dictionary (Jack Halpern) |
| 3031 | New Nelson (John Haig) |
| 132 | Remembering The Kanji (James Heisig) |
| 139 | Remembering The Kanji, 6th edition (James Heisig) |
| 646 | Tuttle Kanji Cards (Alexander Kask) |
Jōyō kanji, taught in grade 5
JLPT level N2
846 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 永久 【エイキュウ】 eternity, permanence, perpetuity, Eikyū era (1113.7.13-1118.4.3)
- 永遠 【エイエン】 eternity, perpetuity, permanence, immortality
- 永々 【エイエイ】 forever
- 大永 【タイエイ】 Taiei era (1521.8.23-1528.8.20)
Kun reading compounds
- 長い 【ながい】 long (distance, length), long (time), protracted, prolonged
- 長いこと 【ながいこと】 for a long time
Readings
- Japanese names:
- え、 と、 のり、 ひさ、 ひさし
- Korean:
- yeong
Spanish
- eterno
- infinito
- perpetuo
- largo
- prolongado
Portuguese
- eternidade
- ambicionar
French
- éternité
- long
- permanent
| 342 | 2001 Kanji |
| 3a1.1 | The Kanji Dictionary |
| 2-1-4 | SKIP code |
| 4-5-4 | SKIP code |
| 3023.2 | Four corner code |
| 1-17-42 | JIS X 0208-1997 kuten code |
| 6c38 | Unicode hex code |
Jōyō kanji, taught in grade 5
JLPT level N1
146 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 保育 【ホイク】 nurturing, rearing, childcare, day care
- 保安 【ホアン】 peace preservation, security, safety
- 留保 【リュウホ】 reserving, withholding
- 生保 【セイホ】 life insurance, livelihood protection, public assistance, welfare
- 保する 【ホスル】 to guarantee
- 保安 【ホウアン】 Hōan era (1120.4.10-1124.4.3)
- 永保 【エイホウ】 Eihō era (1081.2.10-1084.2.7), Eiho era
- 太保 【タイホウ】 Grand Protector (lowest of the top three civil positions of the Zhou dynasty), Minister of the Right (official in Nara and Heian periods)
Kun reading compounds
- 保つ 【たもつ】 to keep, to preserve, to hold, to retain, to maintain, to sustain, to last, to endure, to keep well (food), to wear well, to be durable
Readings
- Japanese names:
- う、 お、 ぶ、 もり、 やす、 やすし
- Korean:
- bo
Spanish
- garantizar
- mantener
- preservar
- proteger
- apoyar
Portuguese
- proteger garantia
- guarda
- preservar
- sustentar
- apoiar
French
- protéger
- garantir
- garder
- préserver
- conserver
- soutenir
| 716 | A Guide To Reading and Writing Japanese (Florence Sakade) |
| 808 | A Guide To Reading and Writing Japanese 3rd edition (Henshall, Seeley and De Groot) |
| 787 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 166 | A New Dictionary of Kanji Usage |
| 455 | Classic Nelson (Andrew Nelson) |
| 351 | Essential Kanji (P.G. O’Neill) |
| 319 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 781 | Japanese Names (P.G. O’Neill) |
| 489 | Kanji and Kana (Spahn and Hadamitzky) |
| 498 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 665 | Kanji in Context (Nishiguchi and Kono) |
| 102 | Kodansha Compact Kanji Guide |
| 107 | Kodansha Kanji Dictionary (Jack Halpern) |
| 72 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 77 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 1006 | Les Kanjis dans la tete (Yves Maniette) |
| 702 | Morohashi |
| 96 | New Japanese English Character Dictionary (Jack Halpern) |
| 222 | New Nelson (John Haig) |
| 997 | Remembering The Kanji (James Heisig) |
| 1072 | Remembering The Kanji, 6th edition (James Heisig) |
| 163 | The Kanji Way to Japanese Language Power (Dale Crowley) |
| 705 | Tuttle Kanji Cards (Alexander Kask) |
| 2164 | 2001 Kanji |
| 2a7.11 | The Kanji Dictionary |
| 1-2-7 | SKIP code |
| 2629.4 | Four corner code |
| 1-42-61 | JIS X 0208-1997 kuten code |
| 4fdd | Unicode hex code |