water under the bridge

English Thesaurus

1. past events to be put aside (noun.time)

hypernym	:	past, past times, yesteryear,
definition	:	the time that has elapsed (noun.time)

derivation	:	bygone, bypast, departed, foregone, gone,
definition	:	well in the past; former (adj.all)

derivation	:	bygone, bypast, departed, foregone, gone,
definition	:	well in the past; former (adj.all)