Synonyms for Tantamount:
equal, equivalent, identical, indistinguishable, alike, same, one and the same, like.
as good as, equal, equivalent, identical, alike, like, parallel, indistinguishable.
n.one and the same, on a par, even. •equivalent (noun)
equal, equivalent, as good as.
Usage examples for tantamount
The average Republican regarded this message as tantamount to a declaration of war. – Union and Democracy by Allen Johnson