noun, na-adjective
ennui; boredom; listlessness; languor
A loanword from French, used in Japanese to describe a mood of world-weary boredom, listlessness, or languor. Often used in literary or aesthetic contexts.
from French
雨の日はなんとなくアンニュイな気分になる。
On rainy days, I somehow feel a sense of ennui.
彼女のアンニュイな表情が
Her languid expression was striking.