English pronunciation of “fathom”

fathom

uk How to pronounce fathom noun in British English
us How to pronounce fathom noun in American English
uk How to pronounce fathom verb in British English
us How to pronounce fathom verb in American English

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