| 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 2
JLPT level N2
958 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 弱 【ジャク】 a little less than, a little under, slightly fewer than, weakness, the weak, low (setting), -lower (seismic intensity)
- 弱者 【ジャクシャ】 weak person, the weak, vulnerable person, disadvantaged person
- 精神薄弱 【セイシンハクジャク】 feeble-mindedness, intellectual disability
- 薄弱 【ハクジャク】 feebleness, weakness, weak
Kun reading compounds
- 弱い 【よわい】 weak, frail, delicate, tender, unskilled, weak (wine)
- 弱い経済 【よわいけいざい】 weak economy
- 弱る 【よわる】 to weaken, to grow weak, to wane, to decline (of one's health), to be downcast, to be dejected, to be dispirited, to be troubled, to be at a loss, to be perplexed, to be annoyed
- 弱まる 【よわまる】 to abate, to weaken, to be emaciated, to be dejected, to be perplexed
- 弱める 【よわめる】 to weaken
Readings
- Korean:
- yag
Spanish
- débil
- endeble
- delicado
- debilitarse
- debilitar
Portuguese
- frágil
- fraco
French
- faible
- fragile
| 236 | A Guide To Reading and Writing Japanese (Florence Sakade) |
| 154 | A Guide To Reading and Writing Japanese 3rd edition (Henshall, Seeley and De Groot) |
| 138 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 819 | A New Dictionary of Kanji Usage |
| 650 | Classic Nelson (Andrew Nelson) |
| 595 | Essential Kanji (P.G. O’Neill) |
| 169 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 1647 | Japanese Names (P.G. O’Neill) |
| 218 | Kanji and Kana (Spahn and Hadamitzky) |
| 218 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 112 | Kanji in Context (Nishiguchi and Kono) |
| 610 | Kodansha Compact Kanji Guide |
| 1499 | Kodansha Kanji Dictionary (Jack Halpern) |
| 792 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 1080 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 1244 | Les Kanjis dans la tete (Yves Maniette) |
| 9791P | Morohashi |
| 1167 | New Japanese English Character Dictionary (Jack Halpern) |
| 1692 | New Nelson (John Haig) |
| 1236 | Remembering The Kanji (James Heisig) |
| 1323 | Remembering The Kanji, 6th edition (James Heisig) |
| 196 | Tuttle Kanji Cards (Alexander Kask) |
| 3553 | 2001 Kanji |
| 3h7.2 | The Kanji Dictionary |
| 1-5-5 | SKIP code |
| 1712.7 | Four corner code |
| 1-28-69 | JIS X 0208-1997 kuten code |
| 5f31 | Unicode hex code |