"She lost the debates and lost her direction!" Trump tweeted.
"The 'deplorables' came back to haunt Hillary.They expressed their feelings loud and clear. She spent big money but, in the end, had no game!" he added in a second tweet.
Trump's tweets came a day after Clinton released her new book "What Happened," which entirely focussed on her experiences on the campaign trail in 2016.
Clinton had won the popular vote by 3 million votes, but did not win the election because Trump won the Electoral College.
He earned 304 Electoral College votes, while Clinton won 227.
Hillary Clinton has been on a promotion-spree of her book 'What Happened' - a book about losing to the president. Her new book, which hit book stores on Tuesday, attempts to explain why she lost the election.
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