This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. Listlessness and dissatisfaction resulting from lack of interest; boredom: "The servants relieved their ennui with gambling and gossip about their masters” ( John Barth).

n. A gripping listlessness or melancholia caused by boredom; depression (Wikipedia).

n. A feeling of weariness and disgust; dullness and languor of spirits, arising from satiety or want of interest; tedium.

n. A painful or wearisome state of mind due to the want of any object of interest, or to enforced attention to something destitute of interest; the condition of being bored; tedium.

n. the feeling of being bored by something tedious

"Prior to this we'd had limited access to the French word "ennui" - a more grandiose, long-term boredom - but once we had our own word for listless dissatisfaction, we embraced it."

vivacity    gayety   

dissatisfaction   

weariness   

blahs    fatigue   

tedium    boredom    boreism   

Bluey    Dewey    Fukui    Huey    Hughie    Louis    Sui    bluey    buoy    chewy   

boredom    weariness    satiety    lassitude    unhappiness    restlessness    apathy    dreariness    tedium    despondency