First Known Use: 1641
Dictionary
tantamount
adjective tan·ta·mount \ˈtan-tə-ˌmau̇nt\
: equal to something in value, meaning, or effect
Full Definition of TANTAMOUNT
: equivalent in value, significance, or effect <a relationship tantamount to marriage>
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Origin of TANTAMOUNT
obsolete tantamount, noun, equivalent, from Anglo-French tant amunter to amount to as much
Rhymes with TANTAMOUNT
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