authenticate
verb (used with object)
to establish as genuine.
had authenticated
-
past perfectof authenticate.past perfect
Used to express a completed action that took place before another specific past action occurred.
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.
The next day, the open-source research outfit Bellingcat said it had authenticated a video showing a Tomahawk missile strike next to the school in Minab.
From Salon ● Mar. 11, 2026
Mrs. Peter gave Templeman the information for the text, telling her that she and her husband had authenticated its veracity.
From Washington Post ● Mar. 11, 2022
The auction house Sotheby’s said it had authenticated what was “an extraordinary re-emergence” of drawings by one of Britain’s most important artists.
From The Guardian ● Nov. 22, 2020
Torres said the mask is authentic, and that professors from Harvard and Columbia had authenticated it.
From Washington Times ● May 23, 2020
The notary, who had authenticated the protest, was dismissed from office and forbidden any farther to practice his profession.
From Peter Stuyvesant, the Last Dutch Governor of New Amsterdam by John S. C. (John Stevens Cabot) Abbott
