what's done cannot be undone
Synonym of what's done is done.
undone
/ʌnˈdʌn/
adj 3
Collocations
6(adj.) not fastened or tied
VERBS
be
come
Her shoelace came undone while she was running for the bus.
get sth
She tried hard to get the zipper undone before leaving for work.
(adj.) not done
VERBS
be | remain
leave sth
She left her homework undone because she forgot about the deadline until the morning.
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