melancholia
US /ˌmel.əŋˈkoʊ.li.ə/
UK /ˌmel.əŋˈkoʊ.li.ə/

1.
憂鬱, 愁緒, 悲傷
a deep, pervasive, and often unshakeable sadness or gloom, sometimes accompanied by apathy and withdrawal.
:
•
His poetry often reflects a profound sense of melancholia.
他的詩歌常常反映出一種深刻的憂鬱感。
•
She fell into a state of deep melancholia after the loss.
失去後,她陷入了深深的憂鬱之中。