| 4 | A Guide To Reading and Writing Japanese (Florence Sakade) |
| 4 | A Guide To Reading and Writing Japanese 3rd edition (Henshall, Seeley and De Groot) |
| 26 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 18 | A New Dictionary of Kanji Usage |
| 1025 | Classic Nelson (Andrew Nelson) |
| 6 | Essential Kanji (P.G. O’Neill) |
| 35 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 188 | Japanese Names (P.G. O’Neill) |
| 1.A | Japanese for Busy People |
| 6 | Kanji and Kana (Spahn and Hadamitzky) |
| 6 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 4 | Kanji in Context (Nishiguchi and Kono) |
| 335 | Kodansha Compact Kanji Guide |
| 3778 | Kodansha Kanji Dictionary (Jack Halpern) |
| 1928 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 2620 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 4 | Les Kanjis dans la tete (Yves Maniette) |
| 4682 | Morohashi |
| 3044 | New Japanese English Character Dictionary (Jack Halpern) |
| 938 | New Nelson (John Haig) |
| 4 | Remembering The Kanji (James Heisig) |
| 4 | Remembering The Kanji, 6th edition (James Heisig) |
| 114 | The Kanji Way to Japanese Language Power (Dale Crowley) |
| 37 | Tuttle Kanji Cards (Alexander Kask) |
Jōyō kanji, taught in grade 1
JLPT level N5
47 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 四 【シ】 four, 4
- ４月 【シガツ】 April, fourth month in the lunar calendar
- 十四 【ジュウシ】 fourteen, 14
- 炭素１４ 【タンソジュウシ】 carbon-14
Kun reading compounds
- 四 【し】 four, 4
- 四畳半 【よじょうはん】 four and a half tatami mats, four-and-a-half-mat room, small room esp. for assignations
- 四つ 【よっつ】 four, 4, four years of age, ten o'clock (in the old time system), burakumin, cross grips
- 四つ角 【よつかど】 four corners, crossroads, intersecting street, street corner
- 四つ 【よっつ】 four, 4, four years of age, ten o'clock (in the old time system), burakumin, cross grips
- 四つの自由 【よっつのじゆう】 the Four Freedoms (as defined by Franklin D. Roosevelt: freedom of speech, freedom of worship, freedom from want, freedom from fear)
- 四 【し】 four, 4
- ４０ 【よんじゅう】 forty, 40
- 十四 【じゅうし】 fourteen, 14
- 軽四 【けいよん】 four-wheeled light vehicle
Readings
- Japanese names:
- あ、 つ、 よつ
- Korean:
- sa
Spanish
- cuatro
- 4
Portuguese
- quatro
French
- quatre
| 3675 | 2001 Kanji |
| 3s2.2 | The Kanji Dictionary |
| 3-3-2 | SKIP code |
| 4-5-1 | SKIP code |
| 6021.0 | Four corner code |
| 1-27-45 | JIS X 0208-1997 kuten code |
| 56db | Unicode hex code |
Jōyō kanji, taught in grade 2
JLPT level N4
112 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 強 【キョウ】 a little over, a little more than, strength, the strong, powerhouse, one of the biggest, one of the most powerful, -upper (seismic intensity)
- 強化 【キョウカ】 strengthening, intensifying, reinforcement, enhancement, solidification, reinforcement
- 列強 【レッキョウ】 major powers of the world, great powers
- 屈強 【クッキョウ】 robust, brawny, muscular, strong, sturdy
- 強盗 【ゴウトウ】 robber, mugger, robbery, burglary
- 強引 【ゴウイン】 overbearing, coercive, pushy, forcible, high-handed
Kun reading compounds
- 強い 【つよい】 strong, potent, competent, domineering, tough, strong, brawny, powerful, healthy, rugged, good (at), skilled, knowledgeable, being able to handle, know how to deal (with), durable (against), resistant (to), resilient, firm, rigid, solid, intense, strong, fierce, high, dependable, trustworthy
- 強い雨 【つよいあめ】 heavy rain (specifically 20-29 mm per hour in JMA use)
- 強まる 【つよまる】 to get strong, to gain strength
- 強める 【つよめる】 to strengthen, to emphasize, to emphasise
- 強いる 【しいる】 to force, to compel, to coerce, to press, to impose
- 強い 【こわい】 tough, stiff, hard, inflexible, obstinate, stubborn, tired, worn out
- 強飯 【こわめし】 glutinous rice with red beans (eaten on celebratory occasions), mochi rice with red beans
Readings
- Japanese names:
- すね
- Korean:
- gang
Spanish
- fuerte
- coacción
- poderoso
- obligar
- forzar
- coaccionar
Portuguese
- Forte
- poderoso
- forçar
French
- fort
| 192 | A Guide To Reading and Writing Japanese (Florence Sakade) |
| 111 | A Guide To Reading and Writing Japanese 3rd edition (Henshall, Seeley and De Groot) |
| 100 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 112 | A New Dictionary of Kanji Usage |
| 1571 | Classic Nelson (Andrew Nelson) |
| 332 | Essential Kanji (P.G. O’Neill) |
| 170 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 1878 | Japanese Names (P.G. O’Neill) |
| 2.11 | Japanese for Busy People |
| 217 | Kanji and Kana (Spahn and Hadamitzky) |
| 217 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 111 | Kanji in Context (Nishiguchi and Kono) |
| 611 | Kodansha Compact Kanji Guide |
| 574 | Kodansha Kanji Dictionary (Jack Halpern) |
| 349 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 432 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 1243 | Les Kanjis dans la tete (Yves Maniette) |
| 9815 | Morohashi |
| 475 | New Japanese English Character Dictionary (Jack Halpern) |
| 1695 | New Nelson (John Haig) |
| 1235 | Remembering The Kanji (James Heisig) |
| 1321 | Remembering The Kanji, 6th edition (James Heisig) |
| 133 | The Kanji Way to Japanese Language Power (Dale Crowley) |
| 201 | Tuttle Kanji Cards (Alexander Kask) |
| 3571 | 2001 Kanji |
| 3h8.3 | The Kanji Dictionary |
| 1-3-8 | SKIP code |
| 1323.6 | Four corner code |
| 1-22-15 | JIS X 0208-1997 kuten code |
| 5f37 | Unicode hex code |