Synonym: O.K., accept, approve, authenticate, certify, confirm, endorse, pass, substantiate, support, uphold, validate. Similar words: gratify, ratified, justify, testify, identify, identification, ratio, rating. Meaning: ['rætɪfaɪ] 
v. approve and express assent, responsibility, or obligation.
v. approve and express assent, responsibility, or obligation. 
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(61) Congress has long wrestled with the question about how best to determine capital levels and lawmakers, who must ratify the weekend emergency plan, are balking.
(62) He had also lobbied the Senate to ratify the Chemical Weapons Convention.
(63) The leader of the new republic had no choice but to ratify this treaty.
More similar words: gratify, ratified, justify, testify, identify, identification, ratio, rating, operating, operation, migration, narrative, AND operation, aberration, reparation, democratic, cooperative, separation, frustration, corporation, exploration, integration, celebration, immigration, generation gap, confederation, demonstration, consideration, concentration, collaboration.