吸毒成瘾 xīdúchéngyǐn drug addiction Origin Definitions Defs Strokes Stroke Words Sentences Sents 吸毒 xīdú verb + noun to take drugs to take or inject illegal drugs (such as heroin, opium, or methamphetamines)成瘾 成癮 chéngyǐn verb + noun to become addicted to develop an uncontrollable habit or dependency