酷 Strokes Write it Listen 酷 kù ruthless; strong (e.g. of wine); (loanword) cool HSK 6 14 strokes Radical 酉 Sound + meaning 5 words Built from酉meaningyǒuwine; wine vessel; chemical告soundgàoto tell, to inform, to announce; to accuse How it works酉 hints at the meaning (wine), and 告 gào hints at the sound.