WASHINGTON—The frequency of U.S. President Donald Trump’s dishonesty had steadily accelerated since late last year.

Then, last week, it skyrocketed.

Trump made an astonishing 103 false claims over those seven days, an average of 15 per day. That shatters his one-week record of 60, which he had set in early March.

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Trump is incessantly inaccurate, but that number is still remarkable. To put it in perspective: he uttered fewer than 100 false claims in eight of his first ten months in office. His previous average had been 101 per month.

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If you’re searching for an explanation, part of it is probably just that Trump talked a lot. He had a campaign rally and roundtable in Minnesota, a speech to Republicans and a roundtable in Nevada, a speech to the National Federation of Independent Businesses, an event on illegal immigration, a Cabinet meeting, a meeting with members of Congress, and a softball “interview” with political ally Mike Huckabee.

Trump is now up to 1,829 false claims for the first 521 days of his presidency, an average of 3.5 per day.

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If Trump is a serial liar, why call this a list of “false claims,” not lies? Click here for our detailed explanation. The short answer is that we can’t be sure that each and every one was intentional. In some cases, he may have been confused or ignorant. What we know, objectively, is that he was not telling the truth.