The British Are Doming! How 'English' Common Sayings Are Crossing the Atlantic and Conquering American Conversation

English tourists visiting the former colonies will no longer have to mind the gap between the two languages.

More and more, Americans are adopting Britishisms in their daily life – taking foreign turns of phrase and accepting them as their own.

Linguists have charted the rise of words like 'ginger' for red hair and 'sell-by date' for expiration date, revealing the use of British has exponentially increased since the 1990s, in some cases more than 1,000 per cent for certain idioms.

'I enjoy seeing them,' Ben Yagoda, professor of English at the University of Delaware, said to the BBC.

Mr Yagoda, author of the forthcoming book How Not to Write Bad, has carefully watched the emergence of the English tongue in America, chronicling it on his blog: Not One-Off Britishisms.

'Over the last decade or so, an alarming number of traditionally British expressions have found their way into the American vocabulary,' he said.

He uses Google Ngram to measure the popularity of a word or phrase on either side of the pond.

The tool allows users to measure the frequency a word appears in various books, periodicals, and other data culled by Google. One can specify which language to search, either British or American English.

Knackered: This chart shows the rise of the term 'knackered,' which means tired, in American English Knackered: This chart shows the rise of the term 'knackered,' which means tired, in American English

Snog Snog: This chart shows the increasing popularity of the word 'snog', which means to kiss passionately, in American English

Chat Up: This chart shows the increased popularity of the term 'Chat Up' in America Chat Up: This chart shows the increased popularity of the term 'Chat Up' in America

On his blog, Mr Yagoda has discussed the rise of several phrases from everything like 'crisps' for potato chips and 'knackered' for tired.

Kory Stamper, Associate Editor for Merriam-Webster, agrees that there has been a British invasion of sorts.

New additions to the definitive American dictionary this year include 'gastropub'.

Mrs Stamper says that gastropub, which is a gentrified pub serving quality meals, was fist used in the Evening Standard in 1996. It came to America in 2000.

Mr Yagoda has traced words like 'posh' and 'ginger' to the popularity of the Spice Girls in the early 1990s and credits J.K. Rowling with a host of additions to the American lexicon.