Donald Trump has never been famed for his grammar. While a recent academic study found the Republican Party’s “presumptive” nominee's syntax was equivalent to that of an 11-year-old, he has now caused an uproar with the choice of words used in his victory speech.

“We’re going to win bigly,” the 69-year-old mogul-turned-politico declared after hearing his competitor Ted Cruz had dropped out of the race for the GOP nomination.

Mr Trump was speaking while toasting his landslide victory in the Indiana primary. “We’ve been losing all the time, we lose with our military, we can’t beat Isis, we lose with trade, we lose with borders, we lose with everything,” he went on.

“We’re not going to lose, we are going to start winning again and we’re going to win bigly.”

People who will flee America if Donald Trump wins Show all 8 1 /8 People who will flee America if Donald Trump wins People who will flee America if Donald Trump wins Miley Cyrus 'God’ he thinks he is the f***ing chosen one or some shit! … Honestly f*** this sh*t I am moving if this is my president! I don’t say things I don’t mean!' Jemal Countess/Getty Images People who will flee America if Donald Trump wins Whoopi Goldberg 'I don’t think that’s America. I don’t want it to be America. Maybe it’s time for me to move you know' People who will flee America if Donald Trump wins Samuel L. Jackson 'If that mother**er becomes president, I’m moving my black ass to South Africa' People who will flee America if Donald Trump wins Raven Symone 'My confession for this election is, if any Republican gets nominated, I’m gonna move to Canada with my entire family. Is that bad? I already have my ticket. I literally bought my ticket, I swear' People who will flee America if Donald Trump wins Cher 'If he were to be elected, I'm moving to Jupiter' People who will flee America if Donald Trump wins Neve Campbell 'I’m terrified. It’s really scary. My biggest fear is that Trump will triumph. I cannot believe that he is still in the game ... [I'll] move back to Canada' People who will flee America if Donald Trump wins Jon Stewart 'I would consider getting in a rocket and going to another planet, because clearly this planet’s gone bonkers' People who will flee America if Donald Trump wins Randy Blythe 'He could just be a clown. If he is the president, though, I am leaving America 'till he's gone'

Bigly is a real but very archaic word which has largely gone out of use. It is defined as meaning “comfortably habitable” by the Collins Dictionary.

Mr Trump's unusual choice of lingo has caused an onslaught of mockery and derision on social media.

Unimpressed with his semantics, one Twitter user said: “I live in fear that this phrase will become part of everyday speech”.

Another added: “The presumptive GOP nominee for President of the United States just said “We're going to win bigly.”

This is not the first time Mr Trump has appeared to utilise the word bigly. An Oxford Dictionary blog entry titled "Refudiating Real Words" back in February about Mr Trump's use of the word bigly, saying he “has managed to come up with a few new words and phrases of his own”.

"Including one that sounds like 'bigly', though some say he means 'big league'," the post continues. "Mr Trump has used it repeatedly as a means of emphasis in stump speeches (stump used in relation to political campaigning, referring to the use of a tree stump, from which an orator would speak). Instances include phrases such as 'Iran is taking over Iraq bigly', or referencing Fox News talking 'bigly' about immigration."

So, how do your grammar skills measure up to Mr Trump? Take our quiz to find out.

How did you do? Let us know in the comments below.