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English definition of “ennui”

ennui

noun [U] uk   /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.
(Definition of ennui from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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