| 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 5
JLPT level N2
683 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 逆 【ギャク】 reverse, opposite, converse (of a hypothesis, etc.), inverse (function)
- 逆効果 【ギャクコウカ】 opposite effect, adverse effect, backfiring
- 反逆 【ハンギャク】 treason, treachery, mutiny, rebellion, insurrection
- 可逆 【カギャク】 reversible, invertible
- 逆旅 【ゲキリョ】 inn
- 逆鱗 【ゲキリン】 one's superior's anger, imperial wrath
- 莫逆 【バクギャク】 cordial relations
- 乱逆 【ランギャク】 rebellion
Kun reading compounds
- 逆 【さか】 inverse, reverse
- 逆さ 【さかさ】 inverted, upside down, reversed, back to front
- 逆さ 【さかさ】 inverted, upside down, reversed, back to front
- 逆さま 【さかさま】 inverted, upside down, reversed, back to front, wrong way round
- 逆らう 【さからう】 to go against, to oppose, to disobey, to defy
Readings
- Korean:
- yeog
Spanish
- reverso
- inverso
- opuesto
- ir en contra
- oponerse
- desobedecer
Portuguese
- invertido
- inverter
- travesso
- contrário
French
- inverse
- contraire
- opposé
- mauvais
| 758 | A Guide To Reading and Writing Japanese (Florence Sakade) |
| 675 | A Guide To Reading and Writing Japanese 3rd edition (Henshall, Seeley and De Groot) |
| 646 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 857 | A New Dictionary of Kanji Usage |
| 4685 | Classic Nelson (Andrew Nelson) |
| 790 | Essential Kanji (P.G. O’Neill) |
| 956 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 1235 | Japanese Names (P.G. O’Neill) |
| 444 | Kanji and Kana (Spahn and Hadamitzky) |
| 451 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 386 | Kanji in Context (Nishiguchi and Kono) |
| 685 | Kodansha Compact Kanji Guide |
| 3835 | Kodansha Kanji Dictionary (Jack Halpern) |
| 1966 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 2662 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 1978 | Les Kanjis dans la tete (Yves Maniette) |
| 38849P | Morohashi |
| 3091 | New Japanese English Character Dictionary (Jack Halpern) |
| 6041 | New Nelson (John Haig) |
| 1959 | Remembering The Kanji (James Heisig) |
| 2109 | Remembering The Kanji, 6th edition (James Heisig) |
| 695 | Tuttle Kanji Cards (Alexander Kask) |
| 960 | 2001 Kanji |
| 2q6.8 | The Kanji Dictionary |
| 3-3-6 | SKIP code |
| 3830.4 | Four corner code |
| 1-21-53 | JIS X 0208-1997 kuten code |
| 9006 | Unicode hex code |