| 775 | A Guide To Reading and Writing Japanese (Florence Sakade) |
| 693 | A Guide To Reading and Writing Japanese 3rd edition (Henshall, Seeley and De Groot) |
| 667 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 533 | A New Dictionary of Kanji Usage |
| 2637 | Classic Nelson (Andrew Nelson) |
| 610 | Essential Kanji (P.G. O’Neill) |
| 694 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 715 | Kanji and Kana (Spahn and Hadamitzky) |
| 728 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 430 | Kanji in Context (Nishiguchi and Kono) |
| 1219 | Kodansha Compact Kanji Guide |
| 733 | Kodansha Kanji Dictionary (Jack Halpern) |
| 436 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 548 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 372 | Les Kanjis dans la tete (Yves Maniette) |
| 17759 | Morohashi |
| 601 | New Japanese English Character Dictionary (Jack Halpern) |
| 3249 | New Nelson (John Haig) |
| 366 | Remembering The Kanji (James Heisig) |
| 391 | Remembering The Kanji, 6th edition (James Heisig) |
| 753 | Tuttle Kanji Cards (Alexander Kask) |
Jōyō kanji, taught in grade 5
JLPT level N2
261 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 減 【ゲン】 reduction, decrease, subtraction, reduction of penalty (under the ritsuryō codes)
- 減員 【ゲンイン】 reduction of staff
- 増減 【ゾウゲン】 increase and decrease, fluctuation
- 軽減 【ケイゲン】 abatement, reduction
Kun reading compounds
- 減る 【へる】 to decrease (in size or number), to diminish, to abate
- 減るもんじゃない 【へるもんじゃない】 it's no big deal, it's nothing to fret about, it's not like it's the end of the world
- 減らす 【へらす】 to abate, to decrease, to diminish, to shorten
Readings
- Korean:
- gam
Spanish
- menguar
- decrecer
- disminuir
- resta
- acortar
Portuguese
- definhar
- decréscimo
- reduzir
- decadência
- encurtar
- obter
- com fome
French
- diminuer
- réduire
- décliner
- décroître
- avoir faim
| 359 | 2001 Kanji |
| 3a9.37 | The Kanji Dictionary |
| 1-3-9 | SKIP code |
| 3315.0 | Four corner code |
| 1-24-26 | JIS X 0208-1997 kuten code |
| 6e1b | Unicode hex code |
Jōyō kanji, taught in grade 3
JLPT level N3
576 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 速 【ソク】 gear, speed (e.g. 4-speed transmission)
- 速度 【ソクド】 speed, velocity, pace, rate, velocity
- 失速 【シッソク】 stall, downturn, slowdown, slump, weakening, decline
- 快速 【カイソク】 high speed, rapidity, rapid-service train (not as fast as express), rapid train
Kun reading compounds
- 早い 【はやい】 fast, quick, rapid, swift, speedy, brisk, prompt, early, soon, earlier than usual, premature, too soon, too early, easy, simple, quick, fast, as soon as ..., the moment ..., the instant ...
- 早める 【はやめる】 to bring forward (e.g. by 3 hours), to advance, to hasten (e.g. one's death), to expedite, to precipitate, to quicken (e.g. one's step), to speed up, to accelerate
- 速やか 【すみやか】 quick, speedy, prompt, rapid, swift
Readings
- Japanese names:
- わ
- Korean:
- sog
Spanish
- rápido
- veloz
- darse prisa
- velocidad
Portuguese
- rápido
- apressar
French
- vite
- rapide
| 453 | A Guide To Reading and Writing Japanese (Florence Sakade) |
| 352 | A Guide To Reading and Writing Japanese 3rd edition (Henshall, Seeley and De Groot) |
| 534 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 659 | A New Dictionary of Kanji Usage |
| 4700 | Classic Nelson (Andrew Nelson) |
| 848 | Essential Kanji (P.G. O’Neill) |
| 958 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 1237 | Japanese Names (P.G. O’Neill) |
| 502 | Kanji and Kana (Spahn and Hadamitzky) |
| 511 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 383 | Kanji in Context (Nishiguchi and Kono) |
| 693 | Kodansha Compact Kanji Guide |
| 3851 | Kodansha Kanji Dictionary (Jack Halpern) |
| 1978 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 2674 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 1685 | Les Kanjis dans la tete (Yves Maniette) |
| 38897P | Morohashi |
| 3105 | New Japanese English Character Dictionary (Jack Halpern) |
| 6060 | New Nelson (John Haig) |
| 1669 | Remembering The Kanji (James Heisig) |
| 1799 | Remembering The Kanji, 6th edition (James Heisig) |
| 360 | Tuttle Kanji Cards (Alexander Kask) |
| 1564 | 2001 Kanji |
| 2q7.4 | The Kanji Dictionary |
| 3-3-7 | SKIP code |
| 3530.9 | Four corner code |
| 1-34-14 | JIS X 0208-1997 kuten code |
| 901f | Unicode hex code |