sackcloth

To act in a way that shows one's penitence or remorse for one's misdeeds or poor behavior. Darren has been wearing sackcloth and ashes ever since his girlfriend broke up with him for cheating on her. There's no way to turn back time on the way I treated my brother growing up. All I can do now is wear sackcloth and ashes.

Behaving in a way that shows one's penitence or remorse for one's misdeeds or poor behavior. Darren has been in sackcloth and ashes ever since his girlfriend broke up with him for cheating on her. There's no way to turn back time on the way I treated my brother growing up. All I can do now is stay in sackcloth and ashes.

if you wear sackcloth and ashes, you show by your behaviour that you are very sorry for something you did wrong I've already apologized. How long must I wear sackcloth and ashes before you'll forgive me?

Mourning or penitence, as in What I did to Julie's child was terrible, and I've been in sackcloth and ashes ever since . This term refers to the ancient Hebrew custom of indicating humility before God by wearing a coarse cloth, normally used to make sacks, and dusting oneself with ashes. In English it appeared in William Tyndale's 1526 biblical translations (Matthew 11:21), "They [the cities Tyre and Sidon] had repented long ago in sackcloth and ashes."