| 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 junior high
JLPT level N1
1058 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 顧問 【コモン】 adviser, advisor, consultant
- 顧客 【コキャク】 customer, client, patron
- 一顧 【イッコ】 slightest notice, slightest consideration, slightest attention, a little thought, glance
- 後顧 【コウコ】 looking back, worry, anxiety
Kun reading compounds
- 顧みる 【かえりみる】 to look back on (the past), to reflect on, to reminisce about, to look behind (at), to turn round (and look), to look over one's shoulder, to consider, to concern oneself about, to take notice of, to pay attention to, to take into consideration
Readings
- Japanese names:
- たか、 み
- Korean:
- go
Spanish
- reflejarse
- volverse hacia
- mirar hacia atrás
- reflexionar
- repasar
- revisar
Portuguese
- recordar
- revisão
- auto-examinar
- voltar-se
French
- considération
- conseiller
- revoir
- reconsidérer
- retourner
| 1235 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 1388 | A New Dictionary of Kanji Usage |
| 5141 | Classic Nelson (Andrew Nelson) |
| 1341 | Essential Kanji (P.G. O’Neill) |
| 1902 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 2929 | Japanese Names (P.G. O’Neill) |
| 1554 | Kanji and Kana (Spahn and Hadamitzky) |
| 1656 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 1648 | Kanji in Context (Nishiguchi and Kono) |
| 1898 | Kodansha Compact Kanji Guide |
| 2394 | Kodansha Kanji Dictionary (Jack Halpern) |
| 1220 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 1677 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 1093 | Les Kanjis dans la tete (Yves Maniette) |
| 43689P | Morohashi |
| 1900 | New Japanese English Character Dictionary (Jack Halpern) |
| 6655 | New Nelson (John Haig) |
| 1084 | Remembering The Kanji (James Heisig) |
| 1165 | Remembering The Kanji, 6th edition (James Heisig) |
| 1941 | Tuttle Kanji Cards (Alexander Kask) |
| 3061 | 2001 Kanji |
| 9a12.2 | The Kanji Dictionary |
| 1-12-9 | SKIP code |
| 3128.6 | Four corner code |
| 1-24-60 | JIS X 0208-1997 kuten code |
| 9867 | Unicode hex code |