Word: 罪魁祸首 (zuìkuíhuòshǒu) Traditional: 罪魁禍首 罪魁祸首 dictionary entry zuìkuíhuòshǒu criminal ringleader Full dictionary entry for 罪魁祸首 Example sentences using 罪魁祸首 2 sentences, showing page 1 of 1. 垃圾是河水变脏的罪魁祸首。 Lājī shì héshuǐ biàn zàng de zuìkuíhuòshǒu. Garbage is the main culprit for the river getting dirty. 熬夜是他生病的罪魁祸首。 Áoyè shì tā shēngbìng de zuìkuíhuòshǒu. Staying up late is the main reason he got sick.