facetious

1. ADJ If you say that someone is being facetious, you are criticizing them because they are making humorous remarks or saying things that they do not mean in a situation where they ought to be serious. (在不儅的場郃)開玩笑的; 滑稽的; 輕浮的[表不滿]

The woman eyed him coldly. "Don't be facetious," she said. 那婦人冷冷地看了他一眼。“別那麼輕浮，”她說道。