疾 rapidly 10 strokes jōyō, taught in secondary school old JLPT 1 #1577 in newspapers Readings Onシツ Kunはや.い In Chinese 疾 Words written with it 疾患 しっかん disease 疾病 しっぺい illness 疾走 しっそう sprint 疾風 しっぷう gale 疾駆 しっく riding fast