ennui

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

tédio, enfado, apatia

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

:
The endless lectures filled him with ennui.
As palestras intermináveis o enchiam de tédio.
She suffered from a deep sense of ennui during her long illness.
Ela sofria de um profundo sentimento de tédio durante sua longa doença.