U.S. first lady Michelle Obama speaks at the Democratic National Convention in Philadelphia, Pennsylvania, U.S. July 25, 2016.
U.S. first lady Michelle Obama speaks at the Democratic National Convention in Philadelphia, Pennsylvania, U.S. July 25, 2016. Reuters/Mark Kauzlarich

Republican presidential nominee Donald Trump was unbelievably impressed over Michelle Obama’s recent speech, in which the US First Lady strongly endorsed the presidential bid of his rival, Democratic nominee Hillary Clinton.

Trump, who is ever active on social media, was notably silent while Barack Obama's wife took the stage at the Wells Fargo Arena in Philadelphia for the Democratic National Convention’s opening night Monday .

Trump, who usually broadcasts what is on his mind instantly on Twitter, scored keynote speakers Vermont Senator Bernie Sanders, Massachusetts Senator Elizabeth Warren, and New Jersey Senator Cory Booker. His thoughts about FLOTUS (First Lady of the United States) were noticeably absent.

"I thought her delivery was excellent," Trump told The Hollywood Reporter instead.

"I thought she did a very good job. I liked her speech,” he added.

As expected, Obama verbally knocked down Trump’s image without even mentioning his name. The First Lady even condemned "the hateful language that we hear from public figures on TV,” in an apparent reference to Trump’s notorious trait of pulling out a fight even with women.

Melania Trump plagiarism

Trump’s strange behaviour over Obama’s speech came after his wife, Melania, was criticised for her “plagiarised” Republication National Convention speech, which contained lines from the First Lady’s speech during the Democratic National Convention in 2008. While the speech fiasco did stir a controversy, no firing was done or disciplinary action was taken within Trump’s camp since last week.

Meanwhile, Mrs Obama’s Monday night speech was described as an ace to Clinton’s race to the White House. In the speech, Mrs Obama cited Clinton for spending “decades doing relentless, thankless work to actually make a difference in children’s lives.”

“I want someone with the proven strength to persevere, someone who knows this job and takes it seriously, someone who understands that the issues a president faces are not black and white and cannot be boiled down to 140 characters,” the First Lady said, apparently referring to Trump.

“Because when you have the nuclear codes at your fingertips and the military in your command, you can’t make snap decisions. You can’t have a thin skin or a tendency to lash out. You need to be steady and measured and well-informed,” she added.