ennui
Definitions
A feeling of listlessness and dissatisfaction arising from a lack of occupation or excitement.
Boredom accompanied by a sense of weariness or melancholy.
Examples
The long, rainy afternoon was filled with a sense of profound ennui as I stared out the window.
He struggled to overcome his deep-seated ennui by taking up a new and challenging hobby.
Synonyms
boredom lassitude tedium lethargy apathy weariness listlessness
Antonyms
excitement enthusiasm interest stimulation energy vitality zest