| 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
1389 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 貞 【テイ】 firm adherence to one's principles, chastity (of a woman)
- 貞潔 【テイケツ】 chastity, purity
- シロウト童貞 【シロウトドウテイ】 man who has never had sex except with sex workers
- 不貞 【フテイ】 unfaithfulness, infidelity, unchastity
- 貞永 【ジョウエイ】 Jōei era (1232.4.2-1233.4.15)
- 貞応 【ジョウオウ】 Jōō era (1222.4.13-1224.11.20)
Kun reading compounds
- 貞はる 【さだはる】 to harp too long on a subject
Readings
- Japanese names:
- さざ、 ただし、 りょう
- Korean:
- jeong
Spanish
- recto
- justo
- constante
- casto
Portuguese
- correto
- casto
- constância
- retidão
French
- intègre
- chasteté
- pureté
- vertu
| 1615 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 1318 | A New Dictionary of Kanji Usage |
| 803 | Classic Nelson (Andrew Nelson) |
| 1238 | Essential Kanji (P.G. O’Neill) |
| 1776 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 982 | Japanese Names (P.G. O’Neill) |
| 1681 | Kanji and Kana (Spahn and Hadamitzky) |
| 1796 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 1764 | Kanji in Context (Nishiguchi and Kono) |
| 1721 | Kodansha Compact Kanji Guide |
| 2586 | Kodansha Kanji Dictionary (Jack Halpern) |
| 1321 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 1792 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 55 | Les Kanjis dans la tete (Yves Maniette) |
| 36658 | Morohashi |
| 2083 | New Japanese English Character Dictionary (Jack Halpern) |
| 5768 | New Nelson (John Haig) |
| 55 | Remembering The Kanji (James Heisig) |
| 58 | Remembering The Kanji, 6th edition (James Heisig) |
| 1295 | Tuttle Kanji Cards (Alexander Kask) |
| 1261 | 2001 Kanji |
| 2m7.1 | The Kanji Dictionary |
| 2-2-7 | SKIP code |
| 2-7-2 | SKIP code |
| 2180.6 | Four corner code |
| 1-36-71 | JIS X 0208-1997 kuten code |
| 8c9e | Unicode hex code |