1. let bygones be bygones - Verb
2. let bygones be bygones - Phrase
let bygones be bygones (third-person singular simple present lets bygones be bygones, present participle letting bygones be bygones, simple past and past participle let bygones be bygones)
(intransitive, idiomatic) To disregard or ignore a past difficulty in a relationship or an offence (when dealing with another individual).
Synonym: forgive and forget
However, she was ready to let bygones be bygones and consider starting afresh for the sake of her kid. Source: Internet
Despite our different political views and our tribal crisis, we should let bygones be bygones. Source: Internet
Renouncing 'violence' means to renounce resistance to occupation, i.e. recognize "Israel", give up resistance, and then let bygones be bygones! Source: Internet
Well, now that both the beauties have decided to let bygones be bygones then does it mean that soon we can expect both sharing the screen space? Source: Internet
We thought we could let bygones be bygones and live in peace and unity. Source: Internet
“But I just want to let them know that I’ve let bygones be bygones if they’d like to confirm me now.” Source: Internet