bygones means things that happened in the past. Lexicurio rates it Sui generis — a strength score of 87 out of 100.
bygones is pronounced /ˈbaɪˌɡɑnz/.
Why “bygones” is a great word
BYGONES — [Noun] Past events, especially unpleasant ones, that are considered over and done with. The plural of the noun 'bygone', from the phrase 'bygone', meaning 'that has gone by', formed from the adverb 'by' and the past participle 'gone' of the verb 'go'. The noun form is attested from the 1560s. Unlike "history," which chronicles an impersonal narrative, or a "grudge," which nurses a persistent resentment, bygones are the specific, raw incidents themselves—the exact sum of a debt never repaid, the taste of iron from a forgotten argument, the rusted lock on a door no one uses anymore. They are the inert wreckage we agree to call weightless, so we might go on.
Etymology
Plural of bygone (noun).
noun
- Things that happened in the past.“[…] if you spare me, bygones are bygones, and when you fellows are in court for piracy, I'll save you all I can.”