tantamount

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UK/ˈtæntəˌmaʊnt/Canada, US[ˈtɛəntəˌmaʊnt]Australia/ˈtæntəˌmæɔnt/Australia[ˈtɛːntəˌmæɔnt]

adjective

Equivalent in meaning or effect; amounting to the same thing in practical terms, even if being technically distinct.

Less commonFirst used 1641–Scrabble 12Word of the Day · Nov 18, 2023

Meanings

adjectivetantamount (comparative more tantamount, superlative most tantamount)

comparative more tantamount · superlative most tantamount

  1. Equivalent in meaning or effect; amounting to the same thing in practical terms, even if being technically distinct.First known use 1641–

    “Defendants’ representations to this Court that Mr. Musk is not running DOGE are tantamount to legal gaslighting,” CREW said.

    2025 March 30, Tierney Sneed, “Is DOGE actually an agency? The answer could have major ramifications”, in CNN
    4 more examples

    Every moment might bring the British cruisers in sight,—two important expeditions had already been baffled in that way,—and the absolute certainty, known to all parties alike, that delay, under these circumstances, was tantamount to ruin; […]

    1853, Thomas De Quincey, “French Invasion of Ireland, and Second Rebellion”, in Autobiographic Sketches (De Quincey’s Works; I), London: James Hogg & Sons, →OCLC, page 270

    […] 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.

    1981, Del Martin, Battered Wives, page 90

    In Bosnia, as in Rwanda, however, passive neutrality was tantamount to complicity with the perpetrators of “ethnic cleansing” and mass murder.

    2003 March 3, Philip Gourevitch, “The Optimist”, in The New Yorker

    Russia has said that it considers the weapons and other increased military aid that Western governments are sending to Ukraine tantamount to war, and has implied that it might strike NATO convoys.

    2022 March 16, Max Fisher, “As Russia Digs In, What’s the Risk of Nuclear War? ‘It’s Not Zero.’”, in The New York Times, →ISSN
verbtantamount (third-person singular simple present tantamounts, present participle tantamounting, simple past and past participle tantamounted)

present singular third person tantamounts · participle present tantamounting · participle past tantamounted · past tantamounted

  1. intransitiveobsoleteTo amount to as much; to be equivalent.First known use 1628–1716

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

    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
nountantamount (plural tantamounts)

plural tantamounts

  1. obsoleteSomething which has the same value or amount (as something else). (attributive use passing into adjective, below)First known use 1637–1646

    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.

    1977, Last Essays of Maurice Hewlett, page 42

Synonyms & antonyms

adjectivebeing essentially equal to something

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

  1. Anglo-Normantant amount
  2. Englishtantamount

First attested in English in 1628. Either inherited from an unattested Middle English borrowing from Anglo-Norman tant amount, from amunter, from tant (“as much”) amonter (“to amount to”) or borrowed in the early 17th century from Italian tanto montare (“to amount to as much”).

Full word history & related roots →

Translations

Bulgarian равностоен, равносилен
  • равностоен (ravnostoen)equivalent in meaning or effect
  • равносилен (ravnosilen)equivalent in meaning or effect
Catalan equivalent
  • equivalentequivalent in meaning or effect
Chinese Cantonese 等於 /等于
  • 等於 /等于equivalent in meaning or effect
Dutch gelijkgesteld, gelijkstaand
  • gelijkgesteldequivalent in meaning or effect
  • gelijkstaandequivalent in meaning or effect
  • gelijkwaardigequivalent in meaning or effect
  • equivalentequivalent in meaning or effect
Finnish samanveroinen, käytännössä sama kuin
  • samanveroinenequivalent in meaning or effect
  • käytännössä sama kuinequivalent in meaning or effect
French équivalent
  • équivalentequivalent in meaning or effect
German gleichbedeutend
  • gleichbedeutendequivalent in meaning or effect
Hungarian egyenértékű, felér
  • egyenértékűequivalent in meaning or effect
  • felérequivalent in meaning or effect
Irish ionann
  • ionannequivalent in meaning or effect
Italian equivalente
  • equivalenteequivalent in meaning or effect
Polish równoważny
  • równoważnyequivalent in meaning or effect
Portuguese equivalente
  • equivalenteequivalent in meaning or effect
Russian равноси́льный
  • равноси́льный (ravnosílʹnyj)equivalent in meaning or effect
Spanish equiparable, equipolente
  • equiparableequivalent in meaning or effect
  • equipolenteequivalent in meaning or effect
  • equivalerequivalent in meaning or effect
Swedish liktydig
  • liktydigequivalent in meaning or effect
Ukrainian рівноси́льний, рівноці́нний
  • рівноси́льний (rivnosýlʹnyj)equivalent in meaning or effect
  • рівноці́нний (rivnocínnyj)equivalent in meaning or effect
Cite this entry
APA

tantamount. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/tantamount

MLA

“tantamount.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/tantamount. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “tantamount,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/tantamount.

Source: tantamount on Wiktionary, CC BY-SA 4.0.