Radical What does the radical 疒 mean? The radical 疒 means sickness; it has 5 strokes. Quick factsMeaningsicknessStrokes5Kanji using it16 疒5 strokes16 kanjisicknessStroke order · 5 strokesWatch it written12345Kanji using this radical病illness疲tired痛pain療treatment疫epidemic疾swift症symptom痘smallpox痢dysentery痴foolish癒healing癖habit嫉envy痕trace痩thin瘍ulcer