"I guess other people have used it perhaps over the years, but I've never noticed it", he told an interviewer.
Its usage has climbed since 2015, according to the dictionary, and really took off this year, with its ubiquity to be acknowledged with a place in the next print edition of the Collins Dictionary.
President Donald Trump is influencing language itself: the phrase "fake news" has been declared the official Collins Dictionary Word of the Year for 2017. Around 2005, the term began to be applied to false news stories that were circulated with malicious intent rather than as satire.And during the 2016 United States presidential campaign, a large number of websites broadcasting false stories about the candidates under the guise of news was spotted.
The Collins' lexicographers found that the usage of the term increased 365 percent since 2016, particularly during the U.S. presidential election campaigns previous year.
US President Donald Trump says he made it up.More news: Preterm birth rate up across Virginia
But even "Insta" - linked to the photo-sharing app Instagram - and "fidget spinner" could not beat the top phrase, defined by Collins as "false, often sensational, information disseminated under the guise of news reporting". Trump tweeted, FAKE NEWS - A TOTAL POLITICAL WITCH HUNT! on January 10, 2017.
The US President has regularly used the phrase to criticise certain media reports and most recently claimed this week that the "fake news is working overtime" in connection to the investigation into Russian interference in the 2016 election.
Other new words hitting the shortlist included "gig economy", "gender fluid" and "cuffing season" - the latter being when single people look for a partner just to keep them warm in the winter months. Last year, the usage of the word "Brexit" was increased by more than 3400 percent.
The British-based Collins English Dictionary announced Thursday that "fake news", the term Trump last week inaccurately suggested he'd coined himself, is one of prominence in 2017.