ennui

US /ˌɑːnˈwiː/
UK /ˌɑːnˈwiː/
"ennui" picture
1.

倦怠感, 退屈, アンニュイ

a feeling of listlessness and dissatisfaction arising from a lack of occupation or excitement; boredom.

:
The endless lectures filled him with ennui.
終わりのない講義は彼を倦怠感で満たした。
She suffered from a deep sense of ennui during her long illness.
彼女は長い病気の間、深い倦怠感に苦しんだ。