say it: BAHY-gawn
bygone is a noun and adjective meaning "past events to be put aside". It carries 2 recorded senses.
well in the past; former
“bygone days”
“dreams of foregone times”
“sweet memories of gone summers”
“relics of a departed era”
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for bygone come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.