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English definition of “ennui”

ennui

noun [U]     /ˌɒnˈwiː/ US  /ˌɑːn-/ literary
a feeling of being bored and mentally tired caused by having nothing interesting or exciting to do: The whole country seems to be affected by the ennui of winter.Boredom, tedium and boring things
(Definition of ennui noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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