C1 noun/adjective /ˈbaɪ.ɡɒn/
bygone
অতীত
Meaning
Something belonging to an earlier time; past and no longer existing.
Example
He often talks about the traditions of bygone days.
সে প্রায়ই অতীত দিনের ঐতিহ্য নিয়ে কথা বলে।