вконец

completely, utterly

f k ɐ nʲ e t͡s

adverb Rare #47,319

completely, utterly Often used with negative results or states.

RU: Я вконец устал.

EN: I’m completely exhausted.

Have you all completely lost your minds?

— Эксперимент 2: Волна (2008)

He could ruin everything completely.

— Крепкий орешек (1988)

I’m completely confused.

I'm completely confused.