суму

суму

"Суму" in English means "sorrow" or "sadness."

Here, 'суму' is the accusative form of 'сум', meaning 'sadness', used as the direct object of the verb 'відчуваю'.

Я відчуваю суму через втрату.

I feel sadness due to the loss.

Here, 'сумою' is the instrumental form of 'сума', meaning 'amount' or 'sum', and specifies the context of the decision.

Він ще не визначився із сумою покупки.

He has not yet decided on the purchase amount.

Here, 'сума' is the nominative form, referring directly to a specific sum or total in a mathematical or financial context.

Для цієї задачі потрібна точна сума.

An exact sum is required for this task.