The word "困倦" means "tired" or "fatigued" in English. It comes from the Chinese characters "困" and "倦", which literally mean "sleepy" and "weary" respectively. Here are some example sentences in English and Chinese:

I'm feeling quite 困倦 after working all day.

我在工作一整天之后感觉很困倦。

The long hike left us all feeling 困倦.

长途徒步使我们都感到困倦。

She looked 困倦 and exhausted after the marathon.

她在马拉松后看起来很困倦和疲惫。