| 1871 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) | 
| 1627 | A New Dictionary of Kanji Usage | 
| 70 | Classic Nelson (Andrew Nelson) | 
| 1518 | Essential Kanji (P.G. O’Neill) | 
| 1319 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) | 
| 1032 | Kanji and Kana (Spahn and Hadamitzky) | 
| 1073 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) | 
| 1829 | Kanji in Context (Nishiguchi and Kono) | 
| 800 | Kodansha Compact Kanji Guide | 
| 2664 | Kodansha Kanji Dictionary (Jack Halpern) | 
| 1357 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) | 
| 1842 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) | 
| 624 | Les Kanjis dans la tete (Yves Maniette) | 
| 11170 | Morohashi | 
| 2145 | New Japanese English Character Dictionary (Jack Halpern) | 
| 1971 | New Nelson (John Haig) | 
| 616 | Remembering The Kanji (James Heisig) | 
| 663 | Remembering The Kanji, 6th edition (James Heisig) | 
| 1763 | Tuttle Kanji Cards (Alexander Kask) | 
      Jōyō kanji, taught in junior high
    
    
      JLPT level N1
    
    
      1625 of 2500 most used kanji in newspapers
    
Stroke order
On reading compounds
- 憂慮 【ユウリョ】 anxiety, concern, fear
 - 憂鬱 【ユウウツ】 depression, melancholy, dejection, gloom, despondency
 - 外憂 【ガイユウ】 external troubles, foreign threat
 - 内憂 【ナイユウ】 internal troubles, domestic discord
 
Kun reading compounds
- 憂える 【うれえる】 to worry about, to be anxious about, to be concerned about, to lament, to grieve, to feel sorrow for
 - 憂い 【うれい】 sorrow, grief, anguish, distress, anxiety, worry, trouble, affliction, fear, misgivings
 - 憂い顔 【うれいがお】 sad face, sorrowful face, anxious look, sad countenance
 - 憂い 【うい】 unhappy, sad, gloomy
 - 憂き 【うき】 unhappy, sad, gloomy
 - 憂き目 【うきめ】 bitter experience, misery, distress, grief, sad thoughts, hardship
 
Readings
- Japanese names:
 - ゆ
 
- Korean:
 - u
 
Spanish
- pesadumbre
 - inquietud
 - preocupación
 - estar apesadumbrado
 - estar inquieto
 - estar preocupado
 
Portuguese
- melancolia
 - luto
 - lamento
 - está infeliz
 - triste
 - ansioso
 
French
- mélancolie
 - dépression
 - chagrin
 - lamentation
 - triste
 - anxieux
 - malheureux
 
| 3167 | 2001 Kanji | 
| 4i12.1 | The Kanji Dictionary | 
| 2-2-13 | SKIP code | 
| 2-8-7 | SKIP code | 
| 1024.7 | Four corner code | 
| 1040.7 | Four corner code | 
| 1-45-11 | JIS X 0208-1997 kuten code | 
| 6182 | Unicode hex code | 
      Jōyō kanji, taught in junior high
    
    
      JLPT level N2
    
    
      796 of 2500 most used kanji in newspapers
    
Stroke order
On reading compounds
- 患者 【カンジャ】 patient
 - 患部 【カンブ】 affected part, diseased part, wound
 - 疾患 【シッカン】 disease, illness, disorder, condition, ailment
 - 病患 【ビョウカン】 sickness, disease
 
Kun reading compounds
- 患う 【わずらう】 to be ill, to suffer from
 
Readings
- Japanese names:
 - くろ
 
- Korean:
 - hwan
 
Spanish
- aflicción
 - ansiedad
 - enfermedad
 - sufrir de
 - estar enfermo
 
Portuguese
- aflição
 - doença
 - sofrer de
 - estar mal
 
French
- maladie
 - affection
 - souffrir de
 - patient
 
| 1101 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) | 
| 1138 | A New Dictionary of Kanji Usage | 
| 1697 | Classic Nelson (Andrew Nelson) | 
| 1206 | Essential Kanji (P.G. O’Neill) | 
| 1299 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) | 
| 1315 | Kanji and Kana (Spahn and Hadamitzky) | 
| 1395 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) | 
| 1367 | Kanji in Context (Nishiguchi and Kono) | 
| 786 | Kodansha Compact Kanji Guide | 
| 3415 | Kodansha Kanji Dictionary (Jack Halpern) | 
| 1760 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) | 
| 2395 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) | 
| 611 | Les Kanjis dans la tete (Yves Maniette) | 
| 10691 | Morohashi | 
| 2747 | New Japanese English Character Dictionary (Jack Halpern) | 
| 1871 | New Nelson (John Haig) | 
| 604 | Remembering The Kanji (James Heisig) | 
| 650 | Remembering The Kanji, 6th edition (James Heisig) | 
| 1431 | Tuttle Kanji Cards (Alexander Kask) | 
| 1658 | 2001 Kanji | 
| 4k7.18 | The Kanji Dictionary | 
| 2-7-4 | SKIP code | 
| 5033.6 | Four corner code | 
| 1-20-21 | JIS X 0208-1997 kuten code | 
| 60a3 | Unicode hex code |