torture

/ˈtɔːt͡ʃə(ɹ)/

Intentional causing of somebody's experiencing agony

In every war there are acts of torture that cause the world to shudder.

The "suffering of the heart" imposed by one on another, as in personal relationships

Coventry City midfielder Josh Ruffels described his 11 months out injured as 'absolute torture' after the goalless draw with Derby County Under-21s. (http//www.ccfc.co.uk/news/article/eleven-months-of-absolute-torture-760652.aspx)

(often as "absolute torture") stage fright, severe embarrassment