| 1661 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 1756 | A New Dictionary of Kanji Usage |
| 2546 | Classic Nelson (Andrew Nelson) |
| 1468 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 821 | Japanese Names (P.G. O’Neill) |
| 1301 | Kanji and Kana (Spahn and Hadamitzky) |
| 1380 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 1844 | Kanji in Context (Nishiguchi and Kono) |
| 1191 | Kodansha Compact Kanji Guide |
| 455 | Kodansha Kanji Dictionary (Jack Halpern) |
| 280 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 340 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 183 | Les Kanjis dans la tete (Yves Maniette) |
| 17386 | Morohashi |
| 380 | New Japanese English Character Dictionary (Jack Halpern) |
| 3125 | New Nelson (John Haig) |
| 181 | Remembering The Kanji (James Heisig) |
| 193 | Remembering The Kanji, 6th edition (James Heisig) |
| 1276 | Tuttle Kanji Cards (Alexander Kask) |
Jōyō kanji, taught in junior high
JLPT level N1
1618 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 洞 【ドウ】 sinus, cavity, antrum, neighborhood (administrative division in North Korea)
- 洞察 【ドウサツ】 discernment, insight
- 空洞 【クウドウ】 cavity, hollow, cave, cavern, hollow
- 風洞 【フウドウ】 wind tunnel
Kun reading compounds
- 洞 【ほら】 hollow, cavity, hole, cave
- 洞穴 【ほらあな】 cave, cavern, den, grotto
Readings
- Japanese names:
- とう
- Korean:
- dong, tong
Spanish
- cavidad
- hueco
- excavación
- prever
Portuguese
- gruta
- caverna
- escavação
French
- antre
- grotte
- excavation
| 349 | 2001 Kanji |
| 3a6.25 | The Kanji Dictionary |
| 1-3-6 | SKIP code |
| 3712.0 | Four corner code |
| 1-38-22 | JIS X 0208-1997 kuten code |
| 6d1e | Unicode hex code |
Jōyō kanji, taught in grade 4
JLPT level N1
339 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 井 【セイ】 well curb, Chinese "Well" constellation (one of the 28 mansions)
- 整然 【セイゼン】 orderly, regular, systematic, well-organized, well-organised, trim, tidy, accurate
- 市井 【シセイ】 the street, the town
- 整々 【セイセイ】 well-ordered, in good order, orderly
Kun reading compounds
- 井 【い】 well
- 堰 【せき】 dam, weir, barrier, sluice
- 筒井 【つつい】 round well
- 市井 【しせい】 the street, the town
Readings
- Japanese names:
- いの、 さい、 ひ
- Korean:
- jeong
Spanish
- pozo
- ciudad
Portuguese
- poço
French
- puits
- margelle
- ville
- communauté
| 1470 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 252 | A New Dictionary of Kanji Usage |
| 165 | Classic Nelson (Andrew Nelson) |
| 916 | Essential Kanji (P.G. O’Neill) |
| 1031 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 103 | Japanese Names (P.G. O’Neill) |
| 1193 | Kanji and Kana (Spahn and Hadamitzky) |
| 1255 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 1064 | Kanji in Context (Nishiguchi and Kono) |
| 34 | Kodansha Compact Kanji Guide |
| 4265 | Kodansha Kanji Dictionary (Jack Halpern) |
| 2153 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 2905 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 1824 | Les Kanjis dans la tete (Yves Maniette) |
| 258 | Morohashi |
| 3454 | New Japanese English Character Dictionary (Jack Halpern) |
| 76 | New Nelson (John Haig) |
| 1806 | Remembering The Kanji (James Heisig) |
| 1946 | Remembering The Kanji, 6th edition (James Heisig) |
| 1019 | Tuttle Kanji Cards (Alexander Kask) |
| 1955 | 2001 Kanji |
| 0a4.46 | The Kanji Dictionary |
| 4-4-3 | SKIP code |
| 5500.0 | Four corner code |
| 1-16-70 | JIS X 0208-1997 kuten code |
| 4e95 | Unicode hex code |
Jōyō kanji, taught in grade 3
JLPT level N3
457 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 守備 【シュビ】 defense, defence
- 守勢 【シュセイ】 (being on the) defensive
- 好守 【コウシュ】 good fielding
- 攻守 【コウシュ】 offense and defense, offence and defence, batting and fielding
- 守護 【シュゴ】 protection, safeguard, shugo (Kamakura or Muromachi period military governor)
- 都寺 【ツウス】 one of the six administrators of a Zen temple
- 居留守 【イルス】 pretending to be out
Kun reading compounds
- 守る 【まもる】 to protect, to guard, to defend, to keep (i.e. a promise), to abide (by the rules), to observe, to obey, to follow
- 守り 【まもり】 protection, defense, defence, providence, amulet, charm, talisman
- 守り神 【まもりがみ】 guardian deity
- 島主 【とうしゅ】 island chief
- 山守 【やまもり】 ranger (forest), mountain guardian
- 守り 【もり】 babysitting, babysitter, protecting, keeping, keeper
- 守り立てる 【もりたてる】 to support, to back up, to rally round, to revive (e.g. a company), to boost (e.g. morale), to bring up, to raise
- 井守 【いもり】 newt (esp. the Japanese fire belly newt, Cynops pyrrhogaster)
- 足無井守 【あしなしいもり】 caecilian (any burrowing legless amphibian of the order Gymnophiona)
- 守 【かみ】 director (of the provincial governors under the ritsuryō system)
- 肥後守 【ひごのかみ】 higonokami, type of folding knife with metal handle
- 出羽守 【でわのかみ】 director of Dewa province, person who frequently makes comparisons with other countries, industries, etc. when complaining about an issue or situation
Readings
- Japanese names:
- う、 し、 も、 て
- Korean:
- su
Spanish
- guardar proteger
- defender
- guardar
- proteger
Portuguese
- vigia
- protege
- defende
- obedece
French
- garder
- protéger
- défendre
- obéir
- respect (des règles)
| 421 | A Guide To Reading and Writing Japanese (Florence Sakade) |
| 316 | A Guide To Reading and Writing Japanese 3rd edition (Henshall, Seeley and De Groot) |
| 300 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 564 | A New Dictionary of Kanji Usage |
| 1282 | Classic Nelson (Andrew Nelson) |
| 352 | Essential Kanji (P.G. O’Neill) |
| 460 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 284 | Japanese Names (P.G. O’Neill) |
| 490 | Kanji and Kana (Spahn and Hadamitzky) |
| 499 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 537 | Kanji in Context (Nishiguchi and Kono) |
| 466 | Kodansha Compact Kanji Guide |
| 2697 | Kodansha Kanji Dictionary (Jack Halpern) |
| 1375 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 1861 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 189 | Les Kanjis dans la tete (Yves Maniette) |
| 7071 | Morohashi |
| 2173 | New Japanese English Character Dictionary (Jack Halpern) |
| 1310 | New Nelson (John Haig) |
| 186 | Remembering The Kanji (James Heisig) |
| 198 | Remembering The Kanji, 6th edition (James Heisig) |
| 364 | The Kanji Way to Japanese Language Power (Dale Crowley) |
| 270 | Tuttle Kanji Cards (Alexander Kask) |
| 748 | 2001 Kanji |
| 3m3.2 | The Kanji Dictionary |
| 2-3-3 | SKIP code |
| 3034.2 | Four corner code |
| 1-28-73 | JIS X 0208-1997 kuten code |
| 5b88 | Unicode hex code |