tantamount

From Anglo-Norman tant amount, from amunter, from tant (“as much”) amonter (“to amount to”).

• IPA^(key): /ˈtæn.təˌmaʊnt/

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tantamount (comparative more tantamount, superlative most tantamount)

1. Equivalent in meaning or effect.

   It's tantamount to fraud.

   In this view, disagreement and treason are tantamount.

   • De Quincey

     the certainty that delay, under these circumstances, was tantamount to ruin

   • 1981, Del Martin, Battered Wives, page 90:

     […] expecting the woman to take her attacker into physical custody is tantamount to preventing the arrest. If she could handle him, she probably would not need to call the police in the first place.

• Used almost exclusively in the phrase tantamount to.

• 2003, In Bosnia, as in Rwanda, however, passive neutrality was tantamount to complicity with the perpetrators of "ethnic cleansing" and mass murder — The New Yorker, 3 March 2003

tantamount (third-person singular simple present tantamounts, present participle tantamounting, simple past and past participle tantamounted)

1. (obsolete) To amount to as much; to be equivalent.
   • a. 1657, Jeremy Taylor, “Of the Sacred Order and Offices of Episcopacy, By Divine Institution, Apostolical Tradition, and Catholick Practice”, in Συμβολον Ἠθικο-Πολεμικον: or a Collection of Polemical and Moral Discourses, R. Royston, page 126:

     […] and yet this will not tant’amount to an immediate Divine inſtitution for Deacons, and how can it then for Presbyters ?

tantamount (plural tantamounts)

1. (obsolete) Something which has the same value or amount (as something else). (attributive use passing into adjective, below)
   • 1977, the Last Essays of Maurice Hewlett, page 42:

     For end thereof, not despondency but madness : for when Cossey understood that Hobday had called his wife a tantamount, he waited for him outside, and gave him what he called a pair of clippers over the ear.