-A feeling of utter weariness and discontent resulting from satiety or lack of interest.
-A feeling of being bored and mentally tired caused by having nothing interesting or exciting to do.
-A feeling of listlessness and dissatisfaction arising from a lack of occupation or excitement.
From French, from Old French enui - annoyance, from enuier - to vex, from Late Latin inodiare - to make loathsome. First Known Use: 1732
Used in a sentence:
“After a month in the bridewell, the ennui was sufficient to transform the usually sanguine Mr. Stockton into an Ophelian fainéant.”