“Post-truth” has been named Oxford Dictionaries’ 2016 international word of the year, vanquishing a politically charged field that included “adulting,” “alt-right,” “Brexiteer,” “glass cliff” and “woke.”

The use of “post-truth” — defined as “relating to or denoting circumstances in which objective facts are less influential in shaping public opinion than appeals to emotion and personal belief” — increased by 2,000 percent over last year, according to analysis of the Oxford English Corpus, which collects roughly 150 million words of spoken and written English from various sources each month.

Katherine Connor Martin, the head of United States dictionaries at Oxford University Press, said it surged most sharply in June after the Brexit vote and Donald J. Trump’s securing the Republican nomination for president, making it an unusually global word.

“What we found especially interesting is that it encapsulated a trans-Atlantic phenomenon,” she said. “Often, when looking at words, you’ll find one that’s a really big deal in the U.K. but not in the U.S.”