疾 Strokes Write it Listen 疾 jí sickness, illness, disease; to envy, to hate HSK 6 10 strokes Radical 疒 Sound + meaning 3 words Built from疒meaningnèsickness, disease矢soundshǐarrow, dart; to vow, to swear How it works疒 hints at the meaning (sickness), and 矢 shǐ hints at the sound.