His frustration with the slow progress was evident to everyone in the team.

frustration 是名词，来自动词 frustrate（使沮丧、挫败），表示"沮丧、挫败感"的情绪状态。这个词由拉丁词根 frustra（徒劳的）和后缀 -tion（表示状态或结果）组成，字面意思是"徒劳无功的状态"。