| 570 | A Guide To Reading and Writing Japanese (Florence Sakade) |
| 664 | A Guide To Reading and Writing Japanese 3rd edition (Henshall, Seeley and De Groot) |
| 634 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 395 | A New Dictionary of Kanji Usage |
| 3217 | Classic Nelson (Andrew Nelson) |
| 661 | Essential Kanji (P.G. O’Neill) |
| 767 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 2305 | Japanese Names (P.G. O’Neill) |
| 603 | Kanji and Kana (Spahn and Hadamitzky) |
| 613 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 803 | Kanji in Context (Nishiguchi and Kono) |
| 1409 | Kodansha Compact Kanji Guide |
| 1571 | Kodansha Kanji Dictionary (Jack Halpern) |
| 830 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 1135 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 574 | Les Kanjis dans la tete (Yves Maniette) |
| 24366 | Morohashi |
| 1228 | New Japanese English Character Dictionary (Jack Halpern) |
| 4039 | New Nelson (John Haig) |
| 567 | Remembering The Kanji (James Heisig) |
| 609 | Remembering The Kanji, 6th edition (James Heisig) |
| 343 | The Kanji Way to Japanese Language Power (Dale Crowley) |
| 805 | Tuttle Kanji Cards (Alexander Kask) |
Jōyō kanji, taught in grade 5
JLPT level N3
252 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 確 【カク】 certain, definite
- 確執 【カクシツ】 discord, antagonism
- 当確 【トウカク】 projected to win, sure to be elected, home free
- 精確 【セイカク】 detailed and accurate, exhaustive and precise, meticulous, finely detailed
Kun reading compounds
- 確か 【たしか】 sure, certain, positive, definite, reliable, trustworthy, safe, sound, firm, accurate, correct, exact, If I'm not mistaken, If I remember correctly, If I remember rightly
- 確かめる 【たしかめる】 to make sure, to check, to ascertain, to confirm, to verify
- 確かめる 【たしかめる】 to make sure, to check, to ascertain, to confirm, to verify
Readings
- Korean:
- hwag
Spanish
- seguro
- cierto
- genuino
- capaz
- asegurarse
- afirmar
Portuguese
- garantia
- firme
- sólido
- duradouro
- apertado
- confirmar
- limpar
- evidente
French
- certitude
- confirmation
- sûr
- solide
- clair
- évident
| 3375 | 2001 Kanji |
| 5a10.3 | The Kanji Dictionary |
| 1-5-10 | SKIP code |
| 1461.4 | Four corner code |
| 1-19-46 | JIS X 0208-1997 kuten code |
| 78ba | 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 |