| 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-, negative prefix
- 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 junior high
JLPT level N1
1402 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 丹念 【タンネン】 painstaking, careful, meticulous, scrupulous, detailed, elaborate
- 丹精 【タンセイ】 working earnestly, sincerity, diligence, effort, pains
- 伊勢丹 【イセタン】 Isetan (department store)
- 切支丹 【キリシタン】 Christianity (in feudal Japan), Christian
Kun reading compounds
- 丹 【に】 red earth (i.e. containing cinnabar or minium), vermilion
- 丹色 【にいろ】 red
- 海胆 【うに】 sea urchin, seasoned sea urchin eggs
- 黄丹 【おうだん】 orange color traditionally worn by the crown prince
Readings
- Japanese names:
- た、 たみ、 まこと
- Korean:
- dan
Spanish
- rojo
- sin adornos
Portuguese
- Ferrugem
- colorido
- vermelho
- pílulas
French
- couleur de rouille
- rouge
- minium
- pilules
| 1563 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 1263 | A New Dictionary of Kanji Usage |
| 163 | Classic Nelson (Andrew Nelson) |
| 1852 | Essential Kanji (P.G. O’Neill) |
| 1028 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 79 | Japanese Names (P.G. O’Neill) |
| 1093 | Kanji and Kana (Spahn and Hadamitzky) |
| 1144 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 1813 | Kanji in Context (Nishiguchi and Kono) |
| 18 | Kodansha Compact Kanji Guide |
| 4249 | Kodansha Kanji Dictionary (Jack Halpern) |
| 2147 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 2897 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 2058 | Les Kanjis dans la tete (Yves Maniette) |
| 99 | Morohashi |
| 3441 | New Japanese English Character Dictionary (Jack Halpern) |
| 36 | New Nelson (John Haig) |
| 2038 | Remembering The Kanji (James Heisig) |
| 2196 | Remembering The Kanji, 6th edition (James Heisig) |
| 1016 | Tuttle Kanji Cards (Alexander Kask) |
| 3647 | 2001 Kanji |
| 0a4.34 | The Kanji Dictionary |
| 4-4-1 | SKIP code |
| 7744.0 | Four corner code |
| 1-35-16 | JIS X 0208-1997 kuten code |
| 4e39 | Unicode hex code |