| 35 | A Guide To Reading and Writing Japanese (Florence Sakade) |
| 51 | A Guide To Reading and Writing Japanese 3rd edition (Henshall, Seeley and De Groot) |
| 46 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 476 | A New Dictionary of Kanji Usage |
| 4534 | Classic Nelson (Andrew Nelson) |
| 275 | Essential Kanji (P.G. O’Neill) |
| 254 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 443 | Japanese Names (P.G. O’Neill) |
| 2.2 | Japanese for Busy People |
| 207 | Kanji and Kana (Spahn and Hadamitzky) |
| 207 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 46 | Kanji in Context (Nishiguchi and Kono) |
| 1751 | Kodansha Compact Kanji Guide |
| 2719 | Kodansha Kanji Dictionary (Jack Halpern) |
| 1389 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 1876 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 1759 | Les Kanjis dans la tete (Yves Maniette) |
| 36993 | Morohashi |
| 2193 | New Japanese English Character Dictionary (Jack Halpern) |
| 5840 | New Nelson (John Haig) |
| 1743 | Remembering The Kanji (James Heisig) |
| 1880 | Remembering The Kanji, 6th edition (James Heisig) |
| 406 | The Kanji Way to Japanese Language Power (Dale Crowley) |
| 68 | Tuttle Kanji Cards (Alexander Kask) |
Jōyō kanji, taught in grade 1
JLPT level N4
584 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 赤軍 【セキグン】 Red Army (Soviet Union, 1918-1946), Workers' and Peasants' Red Army, Japanese Red Army, JRA
- 赤外線 【セキガイセン】 infrared rays, infrared radiation
- 七赤 【シチセキ】 seventh of nine traditional astrological signs (corresponding to Venus and west)
- 日赤 【ニッセキ】 Japanese Red Cross Society (abbr), Nisseki
- 赤銅 【シャクドウ】 shakudo, gold-copper alloy, often with a blue patina
- 赤銅色 【シャクドウイロ】 brown, tan
Kun reading compounds
- 赤 【あか】 red, crimson, scarlet, red-containing colour (e.g. brown, pink, orange), Red (i.e. communist), red light (traffic), red ink (i.e. in finance or proof-reading), (in) the red, complete, total, perfect, obvious, copper, red 5-point card
- 銅 【どう】 copper (Cu), bronze (medal)
- 紅赤 【べにあか】 beniaka, variety of sweet potato with red skin and sweet yellow flesh; product of the Kawagoe region, bright red tinged with yellow
- 真赤 【まあか】 bright red, deep red
- 赤い 【あかい】 red, crimson, scarlet, vermilion, Red, communist
- 赤色 【あかいろ】 red, red color (colour), communism, the left
- 赤らむ 【あからむ】 to become red, to redden, to blush
- 赤らめる 【あからめる】 to blush, to redden
Readings
- Japanese names:
- あ、 あこ、 あま
- Korean:
- jeog
Spanish
- rojo
- enrojecer
- enrojecerse
- sonrojarse
Portuguese
- vermelho
French
- rouge
| 1441 | 2001 Kanji |
| 3b4.10 | The Kanji Dictionary |
| 2-3-4 | SKIP code |
| 4023.1 | Four corner code |
| 4033.1 | Four corner code |
| 1-32-54 | JIS X 0208-1997 kuten code |
| 8d64 | Unicode hex code |
Jōyō kanji, taught in grade 1
JLPT level N2
1488 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 糸 【シ】 thread, 0.0001, one ten-thousandth
- 糸雨 【シウ】 drizzle, light rain, fine rain
- 蚕糸 【サンシ】 silk thread, silk yarn
- 金糸 【キンシ】 gold thread
Kun reading compounds
- 糸 【いと】 thread, yarn, string
- 糸口 【いとぐち】 beginning, start, first step, clue, lead, hint, thread end
- 横糸 【よこいと】 weft, woof (crosswise threads on a loom)
- 生糸 【きいと】 raw silk thread
Readings
- Korean:
- sa
Spanish
- hilo
- hebra
- cuerda
Portuguese
- contexto
French
- fil
| 83 | A Guide To Reading and Writing Japanese (Florence Sakade) |
| 75 | A Guide To Reading and Writing Japanese 3rd edition (Henshall, Seeley and De Groot) |
| 27 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 699 | A New Dictionary of Kanji Usage |
| 3492 | Classic Nelson (Andrew Nelson) |
| 113 | Essential Kanji (P.G. O’Neill) |
| 807 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 720 | Japanese Names (P.G. O’Neill) |
| 242 | Kanji and Kana (Spahn and Hadamitzky) |
| 242 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 409 | Kanji in Context (Nishiguchi and Kono) |
| 1503 | Kodansha Compact Kanji Guide |
| 2703 | Kodansha Kanji Dictionary (Jack Halpern) |
| 1379 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 1866 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 1345 | Les Kanjis dans la tete (Yves Maniette) |
| 27221 | Morohashi |
| 2179 | New Japanese English Character Dictionary (Jack Halpern) |
| 4431 | New Nelson (John Haig) |
| 1333 | Remembering The Kanji (James Heisig) |
| 1431 | Remembering The Kanji, 6th edition (James Heisig) |
| 58 | Tuttle Kanji Cards (Alexander Kask) |
| 2741 | 2001 Kanji |
| 6a0.1 | The Kanji Dictionary |
| 2-3-3 | SKIP code |
| 4-6-4 | SKIP code |
| 2290.3 | Four corner code |
| 2090.3 | Four corner code |
| 1-27-69 | JIS X 0208-1997 kuten code |
| 7cf8 | Unicode hex code |