The Open Dictionary is Macmillan’s crowdsourced dictionary, where you can suggest new words and expressions for us to add. The Open Dictionary started in 2009, and since then more than 4000 new words and phrases have been added. About half of these new words have been “promoted” to become full entries in the Macmillan Dictionary.
Over the last decade or so, an alarming number of traditionally British expressions have found their way into the American vocabulary.
Some Britishisms are advert, DIY, ginger (a person with red hair), gobsmacked, Hoover (verb), kerfuffle, mobile (i.e. a mobile phone), on holiday, queue, sell-by date, short-listed, snog, straight away, take a decision, twee.