Meaning of “tantamount” in the English Dictionary

british dictionary

"tantamount" in British English

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tantamountadjective

uk /ˈtæn.tə.maʊnt/ us /ˈtæn.t̬ə.maʊnt/ formal

(Definition of “tantamount” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"tantamount" in American English

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tantamountadjective

us /ˈtænt·əˌmɑʊnt/

equal:

Her silence was tantamount to an admission of guilt.

(Definition of “tantamount” from the Cambridge Academic Content Dictionary © Cambridge University Press)