tantamount
adjective formal uk/ˈtæn.tə.maʊnt/ us/ˈtæn.t̬ə.maʊnt/
tantamount to something 几近于；等于，相当于
being almost the same or having the same effect as something, usually something bad
Her refusal to answer was tantamount to an admission of guilt. 她拒绝回答等于是认罪。
Synonym: equivalent