“发威”是一个汉语成语，意思是指某人或某事表现出极大的力量、气概或魅力。这个词常用来形容领袖、领导人等在处理问题时具有非凡的力量和气势。 用法示例： 1. 求助他发威，他不回答。 - He didn't reply to the request by showing him his power and strength. 2. 他们对他的言论表示高度的尊重，发威。 - They showed him great respect for their words, and he was very powerful in his speech. 3. 妈妈让我向同学说句话时，他发威了。 - He acted with authority when I told my friend how to behave in the class. 4. 他很尊敬他的父亲，但又表现出极大的威信。 - He was so respectful of his father, but he also had great authority and power over him. 这个成语常用来形容那些在领导或管理职位上表现得异常强大的人。