sadly, mournfully, sorrowfully
Он скорбно покачал головой.
He sadly shook his head.
Она скорбно покачала головой в ответ.
She shook her head sadly in response.
Скорбно, да истинно.
It's sad, but true.
Старик скорбно смотрел на пустой дом.
The old man looked sadly at the empty house.
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