say it: TAN-tuh-mownt
tantamount is an adjective meaning "being essentially equal to something". It carries one recorded sense.
being essentially equal to something
“it was as good as gold”
“a wish that was equivalent to a command”
“his statement was tantamount to an admission of guilt”
Definitions, synonyms and semantic relations for tantamount come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.