IPA: /ˈbaɪɡɒn/
KK: /ˈbaɪˌɡɔn/
Relating to a time that has passed or is no longer in existence.
The museum showcases artifacts from bygone eras.
Something that has happened in the past, often referring to a situation or event that is no longer relevant or important.
We should forget our arguments and let bygones be bygones.
Bygone → It originates from the Old English 'bygon', which is the past participle of 'bygan', meaning to go by or pass. The word 'bygone' refers to something that has passed or is from the past.
Think of something that has 'gone by' in time — that's why 'bygone' means something from the past.