от тоски

from longing

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phrase Rare #48,536
from longing Тоска is a deep, often painful sadness or yearning. With по + person, it means longing for that person.
RU: Она скучала от тоски по дому.
EN: She was aching with longing for home.

Предки стали от тоски.

The ancestors became from melancholy.

— Общество мёртвых поэтов (1989)

Я умираю от тоски по тебе!

I'm dying of longing for you!

Но вдруг не выйдет, я вновь умру от тоски по тебе.

But what if it doesn’t work out? I’ll die of longing for you all over again.

— Китайская история призраков (1987)