| 500 | A Guide To Reading and Writing Japanese (Florence Sakade) |
| 600 | A Guide To Reading and Writing Japanese 3rd edition (Henshall, Seeley and De Groot) |
| 572 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 134 | A New Dictionary of Kanji Usage |
| 17 | Classic Nelson (Andrew Nelson) |
| 130 | Essential Kanji (P.G. O’Neill) |
| 104 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 94 | Japanese Names (P.G. O’Neill) |
| 3.18 | Japanese for Busy People |
| 94 | Kanji and Kana (Spahn and Hadamitzky) |
| 94 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 422 | Kanji in Context (Nishiguchi and Kono) |
| 10 | Kodansha Compact Kanji Guide |
| 4242 | Kodansha Kanji Dictionary (Jack Halpern) |
| 2141 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 2890 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 1225 | Les Kanjis dans la tete (Yves Maniette) |
| 19 | Morohashi |
| 3434 | New Japanese English Character Dictionary (Jack Halpern) |
| 13 | New Nelson (John Haig) |
| 1217 | Remembering The Kanji (James Heisig) |
| 1302 | Remembering The Kanji, 6th edition (James Heisig) |
| 103 | The Kanji Way to Japanese Language Power (Dale Crowley) |
| 444 | Tuttle Kanji Cards (Alexander Kask) |
Jōyō kanji, taught in grade 4
JLPT level N4
101 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 不 【フ】 un-, non-
- 不安 【フアン】 anxiety, uneasiness, worry, apprehension, fear, insecurity, suspense
- 意味不 【イミフ】 of uncertain meaning, ambiguous, cryptic, nonsensical, incomprehensible, perplexing
- 社不 【シャフ】 person unfit for society, misfit
- 無 【ブ】 un-, non-, bad ..., poor ...
- 不気味 【ブキミ】 weird, eerie, ominous, creepy, uncanny, unearthly
Readings
- Korean:
- bu, bul
Spanish
- prefijo negativo: in-
- des-
Portuguese
- Prefixo negativo
- negativa
- não
- feia
- ruim
- deselegante
French
- négation
- non
- mauvais
- laid
- maladroit
| 3154 | 2001 Kanji |
| 0a4.2 | The Kanji Dictionary |
| 4-4-1 | SKIP code |
| 3-3-1 | SKIP code |
| 3-2-2 | SKIP code |
| 1090.0 | Four corner code |
| 1-41-52 | JIS X 0208-1997 kuten code |
| 4e0d | Unicode hex code |
Jōyō kanji, taught in grade 5
JLPT level N1
1595 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 廉潔 【レンケツ】 honest, incorruptible, integrity
- 貞潔 【テイケツ】 chastity, purity
Kun reading compounds
- 潔い 【いさぎよい】 gracious (defeat, apology, etc.), graceful, honourable (e.g. death), noble, gallant, brave, manly, sportsmanlike, upright, righteous, honest, pure (heart), innocent, unspoiled (scenery, etc.), pure, clean
Readings
- Japanese names:
- きよ、 きよし
- Korean:
- gyeol
Spanish
- claro
- puro
- limpio
- honrado
- varonil
Portuguese
- incorrupto
- puro
- limpar
- correto
- galanteador
French
- viril
- immaculé
- pur
- clair
- droit
- brave
| 767 | A Guide To Reading and Writing Japanese (Florence Sakade) |
| 686 | A Guide To Reading and Writing Japanese 3rd edition (Henshall, Seeley and De Groot) |
| 659 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 1397 | A New Dictionary of Kanji Usage |
| 2698 | Classic Nelson (Andrew Nelson) |
| 672 | Essential Kanji (P.G. O’Neill) |
| 1500 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 2615 | Japanese Names (P.G. O’Neill) |
| 1241 | Kanji and Kana (Spahn and Hadamitzky) |
| 1307 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 753 | Kanji in Context (Nishiguchi and Kono) |
| 1249 | Kodansha Compact Kanji Guide |
| 920 | Kodansha Kanji Dictionary (Jack Halpern) |
| 519 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 678 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 1562 | Les Kanjis dans la tete (Yves Maniette) |
| 18231X | Morohashi |
| 744 | New Japanese English Character Dictionary (Jack Halpern) |
| 3332 | New Nelson (John Haig) |
| 1548 | Remembering The Kanji (James Heisig) |
| 1668 | Remembering The Kanji, 6th edition (James Heisig) |
| 806 | Tuttle Kanji Cards (Alexander Kask) |
| 341 | 2001 Kanji |
| 3a12.10 | The Kanji Dictionary |
| 1-3-12 | SKIP code |
| 3719.3 | Four corner code |
| 1-23-73 | JIS X 0208-1997 kuten code |
| 6f54 | Unicode hex code |