1 sentence for 轻薄 (qīng​bó — frivolous)

1. 他在这种正式场合言谈轻薄，给人留下了不好的印象。

   tā zài zhè zhǒng zhèng​shì chǎng​hé yán​tán qīng​bó, gěi rén liú​xià le bù hǎo de yìn​xiàng.

   His frivolous talk in such a formal setting left a bad impression.

   Source: Dong Chinese Dictionary