Dictionary.com
Thesaurus.com
Synonyms

ratify

American  
[rat-uh-fahy] / ˈræt əˌfaɪ /

verb (used with object)

  • ratifies,
    present (3rd person singular)
  • ratified,
    past participle,  past
  • ratifying
    present participle
  1. An image of the word ratify as defined by to confirm by expressing consent, approval, or formal sanction.

    to confirm by expressing consent, approval, or formal sanction.

    to ratify a constitutional amendment.

    Synonyms:
    approve, corroborate
    Antonyms:
    disapprove, veto
  2. to confirm (something done or arranged by an agent or by representatives) by such action.

    Synonyms:
    establish, validate

ratify British  
/ ˈrætɪˌfaɪ /

verb

  1. (tr) to give formal approval or consent to

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Derived Forms

Inflected Forms

Participles

Conjugated Forms

Present

Past

Future

Etymology

Origin of ratify

First recorded in 1325–75; Middle English ratifien, from Middle French ratifier, from Medieval Latin ratificāre, equivalent to Latin rat(us) “calculated” ( see rate 1) + -ificāre -ify

Explanation

To ratify a treaty or contract is to officially approve it by signing or voting for it. You and your brothers and sisters might devise a plan for a family vacation to Disney World, but it would need to be ratified by your parents. You are most likely to hear the word ratify when talking about laws. In the U.S., Congress writes bills, but they need to be ratified before they become law. An amendment to the U.S. Constitution must be ratified by three-fourths of the states, either passed by the state legislatures or by state conventions.

Keep Reading on Vocabulary.com

Vocabulary lists containing ratify

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Confirmation can elevate the official; it cannot ratify the paper.

From Slate ● Aug. 10, 2026

The Board of Education also must ratify tentative agreements.

From Los Angeles Times ● Apr. 14, 2026

Updating the Exchange of Notes is "necessary in order to ratify the treaty", Doughty told MPs.

From BBC ● Apr. 13, 2026

The European Union will provisionally apply its trade agreement with South American countries as lawmakers in the bloc are still waiting to ratify the accord.

From The Wall Street Journal ● Mar. 26, 2026

His attack was on those who wrote history to ratify and glorify the present, particularly present political arrangements.

From "The Invention of Science" by David Wootton

Its logic reaches the labor board, the merit board, and the trade commission and ratifies the removals the court had already waved through at the consumer-product, surface-transportation, and employment agencies.

From Slate ● Jun. 30, 2026

The dollar “probably can keep selling off because it kind of ratifies the current narrative,” said Brent Donnelly, president of Spectra Markets.

From The Wall Street Journal ● Jan. 27, 2026

It's also unclear how the Senate, which ratifies treaties, would respond if the US reached some sort of agreement with Denmark to take over part or all of Greenland.

From BBC ● Jan. 21, 2026

“What Mike White does is so insanely strong that when he ratifies an actor — or gives someone their moment — it’s just so deeply impressive,” Perkins says.

From Los Angeles Times ● Feb. 21, 2025

Connecticut, government of, 65; quarrels with New York and Pennsylvania, 146–151; keeps almost entirely clear of paper money, 172; western claims of, 189, 194; ratifies the Constitution, 316.

From The Critical Period of American History by John Fiske

The upper house, the Council of the Nation, will review the law before it is officially ratified by the president.

From BBC ● Oct. 1, 2026

MAL was one of four blood group systems ratified during the period covered by the organization's 2026 terminology report, alongside ER, CD36 and ATP11C.

From Science Daily ● Sep. 19, 2026

Women couldn’t vote until the 19th Amendment was ratified in 1920.

From Salon ● Sep. 11, 2026

Walter had sold the Lakers after less than one year of ownership ratified by the NBA board of governors — and not through a comprehensive bidding process, but to an inquiring caller during the weekend?

From Los Angeles Times ● Aug. 13, 2026

She supported the Equal Rights Amendment, proposed in 1923; Congress passed the bill in 1912, but it was never ratified by three-fourths of the states.

From "Votes for Women!" by Winifred Conkling

A supermajority requirement would apply only to constitutional amendments and ratifying treaties.

From Slate ● Jul. 31, 2026

Von der Leyen said Thursday that the bloc has made "good progress" towards ratifying the deal by early July.

From Barron's ● May 7, 2026

Yet ratifying the agreement has proven difficult because roughly half of the guides don’t want to unionize.

From Los Angeles Times ● Dec. 12, 2025

Nations had been scheduled to vote on ratifying the plan this week, but the ballot was postponed for a year after a lobbying campaign from the U.S.

From The Wall Street Journal ● Oct. 17, 2025

The debates in the ratifying conventions of the respective states only exposed the irreconcilable differences of opinion that the Constitution had so deftly bundled together.

From "Founding Brothers: The Revolutionary Generation" by Joseph J. Ellis

Vocabulary.com logo
by dictionary.com

Join 14,000,000 vocabulary learners

Start learning new words today on VocabTrainer.
You'll remember them forever.

Start training