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sackcloth

2 ENTRIES FOUND:
sackcloth /ˈsækˌklɑːθ/ noun
sackcloth
/ˈsækˌklɑːθ/
noun
Britannica Dictionary definition of SACKCLOTH
[noncount]
: rough cloth that is used for making sacks

sackcloth and ashes

◊ To don/wear sackcloth and ashes means to publicly express or show sorrow or regret for having done something wrong.