A coarse hessian style of cloth used to make sacks. / (usually with “and ashes”, also figuratively) Garments worn as an act of penance.

Made of sackcloth.

plural of sackcloth

Dressed in sackcloth.

past participle of wear sackcloth and ashes

Third-person singular simple present indicative form of wear sackcloth and ashes

present participle of wear sackcloth and ashes

(idiomatic) to publicly express regret for something done wrong.

simple past tense of wear sackcloth and ashes