A person or thing that creates or produces something; an entity that brings about an effect.

A colloquial term used to describe a tumultuous situation or experience.

एक उथल-पुथल भरा स्थिति या अनुभव का शब्द

English Usage: His life turned into a helleri after the sudden loss.

Hindi Usage: अचानक नुकसान के बाद, उसकी ज़िंदगी एक helleri बन गई।