| 1156 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 1588 | A New Dictionary of Kanji Usage |
| 4109 | Classic Nelson (Andrew Nelson) |
| 1484 | Essential Kanji (P.G. O’Neill) |
| 1712 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 1519 | Japanese Names (P.G. O’Neill) |
| 1572 | Kanji and Kana (Spahn and Hadamitzky) |
| 1678 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 1741 | Kanji in Context (Nishiguchi and Kono) |
| 1601 | Kodansha Compact Kanji Guide |
| 4017 | Kodansha Kanji Dictionary (Jack Halpern) |
| 2053 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 2778 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 2012 | Les Kanjis dans la tete (Yves Maniette) |
| 32708 | Morohashi |
| 3237 | New Japanese English Character Dictionary (Jack Halpern) |
| 5269 | New Nelson (John Haig) |
| 1993 | Remembering The Kanji (James Heisig) |
| 2148 | Remembering The Kanji, 6th edition (James Heisig) |
| 1481 | Tuttle Kanji Cards (Alexander Kask) |
Jōyō kanji, taught in junior high
JLPT level N1
1454 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 虚 【キョ】 unpreparedness, falsehood, Chinese "Emptiness" constellation (one of the 28 mansions)
- 虚偽 【キョギ】 falsehood, untruth, lie, misinformation, fallacy
- 盈虚 【エイキョ】 waxing and waning (of the moon), phase, rising and falling (of fortune)
- 太虚 【タイキョ】 the sky, the heavens, Great Void (in ancient Chinese philosophy, the primordial substance that gives rise to qi)
- 虚偽 【キョギ】 falsehood, untruth, lie, misinformation, fallacy
- 虚空 【コクウ】 empty space, empty sky
Kun reading compounds
- 虚しい 【むなしい】 empty, void, vacant, vain, fruitless, futile, ineffective, lifeless
- 虚ろ 【うつろ】 cavity, hollow, void, hollow (voice, smile, etc.), blank (eyes, look, etc.), vacant (expression, stare, etc.), empty (words, heart, etc.)
- 虚舟 【うつろぶね】 unidentified craft said to have washed ashore in Ibaraki Prefecture during the Edo period (sometimes alleged to have been a UFO)
Readings
- Korean:
- heo
Spanish
- vacío
- vano
- hueco
Portuguese
- vazio
- vacuidade
- despreparo
- abertura
- fissura
- falsidade
French
- vide
- impréparation
- craquelure
- fissure
- contre-vérité
| 1274 | 2001 Kanji |
| 2m9.1 | The Kanji Dictionary |
| 3-4-7 | SKIP code |
| 3-6-5 | SKIP code |
| 2121.2 | Four corner code |
| 1-21-85 | JIS X 0208-1997 kuten code |
| 865a | Unicode hex code |
Jōyō kanji, taught in grade 3
JLPT level N2
620 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 根 【コン】 stick-to-itiveness, perseverance, persistence, radical (esp. one that tends to ionize easily), root, indriya (faculty of the body having a specific function, i.e. the sensory organs)
- 根幹 【コンカン】 foundation, root, basis, core, fundamentals, root and trunk
- 事実無根 【ジジツムコン】 groundless, entirely contrary to fact
- 球根 【キュウコン】 (plant) bulb
Kun reading compounds
- 根 【ね】 root (of a plant), root (of a tooth, hair, etc.), center (of a pimple, etc.), root (of all evil, etc.), source, origin, cause, basis, one's true nature, (fishing) reef
- 根ざす 【ねざす】 to come from, to have roots in
- 島根 【しまね】 Shimane (prefecture), island country
- 尾根 【おね】 (mountain) ridge
Readings
- Korean:
- geun
Spanish
- raíz matemática
- perseverancia
- raíz
Portuguese
- raiz
- radical
- verruga
French
- racine
- radical
- point noir (acné)
| 216 | A Guide To Reading and Writing Japanese (Florence Sakade) |
| 298 | A Guide To Reading and Writing Japanese 3rd edition (Henshall, Seeley and De Groot) |
| 282 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 535 | A New Dictionary of Kanji Usage |
| 2261 | Classic Nelson (Andrew Nelson) |
| 425 | Essential Kanji (P.G. O’Neill) |
| 632 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 1372 | Japanese Names (P.G. O’Neill) |
| 314 | Kanji and Kana (Spahn and Hadamitzky) |
| 314 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 974 | Kanji in Context (Nishiguchi and Kono) |
| 1092 | Kodansha Compact Kanji Guide |
| 1167 | Kodansha Kanji Dictionary (Jack Halpern) |
| 631 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 841 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 1473 | Les Kanjis dans la tete (Yves Maniette) |
| 14745 | Morohashi |
| 930 | New Japanese English Character Dictionary (Jack Halpern) |
| 2670 | New Nelson (John Haig) |
| 1461 | Remembering The Kanji (James Heisig) |
| 1571 | Remembering The Kanji, 6th edition (James Heisig) |
| 390 | The Kanji Way to Japanese Language Power (Dale Crowley) |
| 355 | Tuttle Kanji Cards (Alexander Kask) |
| 1865 | 2001 Kanji |
| 4a6.5 | The Kanji Dictionary |
| 1-4-6 | SKIP code |
| 4793.2 | Four corner code |
| 1-26-12 | JIS X 0208-1997 kuten code |
| 6839 | Unicode hex code |