English pronunciation of “bygone”

bygone

uk How to pronounce bygone adjective in British English
us How to pronounce bygone adjective in American English
uk How to pronounce bygone noun in British English
us How to pronounce bygone noun in American English

(English pronunciations of “bygone” from the Cambridge Advanced Learner’s Dictionary & Thesaurus and from the Cambridge Academic Content Dictionary, both sources © Cambridge University Press)