- Equivalent in seriousness to; virtually the same as: the resignations were tantamount to an admission of guiltMore example sentences
- In fact, charging people to use the road would be seen as tantamount to having an admission fee for entry to the town.
- When he signed up for the army it was tantamount to an admission that reality had intruded on his dream.
- Going on holiday without a school's permission is tantamount to truancy, said the junior education minister.
mid 17th century: from the earlier verb tantamount 'amount to as much', from Italian tanto montare.