| 744 | A Guide To Reading and Writing Japanese (Florence Sakade) |
| 655 | A Guide To Reading and Writing Japanese 3rd edition (Henshall, Seeley and De Groot) |
| 816 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 510 | A New Dictionary of Kanji Usage |
| 24 | Classic Nelson (Andrew Nelson) |
| 253 | Essential Kanji (P.G. O’Neill) |
| 397 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 165 | Japanese Names (P.G. O’Neill) |
| 388 | Kanji and Kana (Spahn and Hadamitzky) |
| 390 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 412 | Kanji in Context (Nishiguchi and Kono) |
| 314 | Kodansha Compact Kanji Guide |
| 3687 | Kodansha Kanji Dictionary (Jack Halpern) |
| 1882 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 2562 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 94 | Les Kanjis dans la tete (Yves Maniette) |
| 3245 | Morohashi |
| 2969 | New Japanese English Character Dictionary (Jack Halpern) |
| 701 | New Nelson (John Haig) |
| 93 | Remembering The Kanji (James Heisig) |
| 97 | Remembering The Kanji, 6th edition (James Heisig) |
| 463 | The Kanji Way to Japanese Language Power (Dale Crowley) |
| 647 | Tuttle Kanji Cards (Alexander Kask) |
Jōyō kanji, taught in grade 5
314 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 可 【カ】 acceptable, satisfactory, allowed, permitted, approval, being in favour, (a) vote in favour, aye, Pass (grade), Fair, C, D
- 可決 【カケツ】 approval, adoption (of a motion, bill, etc.), passage
- 裁可 【サイカ】 sanction, approval
- 不裁可 【フサイカ】 veto, rejection
Readings
- Japanese names:
- よし
- Korean:
- ga, geug
Spanish
- bueno
- aprobación
- posible
- poder hacer
Portuguese
- aceitável
- não deve não
- faz
French
- possible
- acceptable
- ne doit pas
- ne pas, négatif
| 3149 | 2001 Kanji |
| 3d2.12 | The Kanji Dictionary |
| 3-2-3 | SKIP code |
| 1062.0 | Four corner code |
| 1-18-36 | JIS X 0208-1997 kuten code |
| 53ef | Unicode hex code |
Jōyō kanji, taught in grade 4
JLPT level N3
94 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 約 【ヤク】 approximately, about, promise, appointment, engagement, shortening, reduction, simplification, contraction (in phonetics)
- 約束 【ヤクソク】 promise, agreement, arrangement, one's word, contract, pact, appointment, engagement, date, convention, rule, destiny, fate
- 締約 【テイヤク】 conclusion of a treaty
- 成約 【セイヤク】 conclusion of a contract
Kun reading compounds
- 約まる 【つづまる】 to compress, to shrink
- 約める 【つづめる】 to abridge, to shorten, to economize
- 約やか 【つづまやか】 concise, brief, humble, frugal, modest, discrete
Readings
- Korean:
- yag, yo
Spanish
- promesa
- aproximadamente
- encogerse
- economizar
Portuguese
- promessa
- aproximadamente
- recuar
French
- environ
- promettre
- abréger
- raccourcir
| 726 | A Guide To Reading and Writing Japanese (Florence Sakade) |
| 621 | A Guide To Reading and Writing Japanese 3rd edition (Henshall, Seeley and De Groot) |
| 591 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 137 | A New Dictionary of Kanji Usage |
| 3499 | Classic Nelson (Andrew Nelson) |
| 451 | Essential Kanji (P.G. O’Neill) |
| 808 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 2.12 | Japanese for Busy People |
| 211 | Kanji and Kana (Spahn and Hadamitzky) |
| 211 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 381 | Kanji in Context (Nishiguchi and Kono) |
| 1516 | Kodansha Compact Kanji Guide |
| 1632 | Kodansha Kanji Dictionary (Jack Halpern) |
| 860 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 1177 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 1374 | Les Kanjis dans la tete (Yves Maniette) |
| 27242X | Morohashi |
| 1280 | New Japanese English Character Dictionary (Jack Halpern) |
| 4440 | New Nelson (John Haig) |
| 1362 | Remembering The Kanji (James Heisig) |
| 1462 | Remembering The Kanji, 6th edition (James Heisig) |
| 258 | The Kanji Way to Japanese Language Power (Dale Crowley) |
| 534 | Tuttle Kanji Cards (Alexander Kask) |
| 2752 | 2001 Kanji |
| 6a3.7 | The Kanji Dictionary |
| 1-6-3 | SKIP code |
| 2792.0 | Four corner code |
| 1-44-83 | JIS X 0208-1997 kuten code |
| 7d04 | Unicode hex code |