Answer:

WATEROVERTHEDAM

AnswerCrossword Clue
WATEROVERTHEDAMBygones
WATEROVERTHEDAMIt can't be changed
WATEROVERTHEDAMThings irrevocable.
WATEROVERTHEDAMSomething done and best forgotten.
WATEROVERTHEDAMSomething beyond recall.
WATEROVERTHEDAMRelative of spilt milk
WATEROVERTHEDAMItem beyond recall
WATEROVERTHEDAMSomething beyond recall
WATEROVERTHEDAMBygone events
WATEROVERTHEDAMYesterday's tears, so to speak
WATEROVERTHEDAMThe irrecoverable past
WATEROVERTHEDAMT.V.A. concern
WATEROVERTHEDAMHistory that no longer matters
WATEROVERTHEDAMSomething that can't be undone
WATEROVERTHEDAMThings past
WATEROVERTHEDAMToo-late situation