ennui
US /ˌɑːnˈwiː/
UK /ˌɑːnˈwiː/

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.