The word ‘Brexit’ was coined by EURACTIV, according to the latest edition of the Oxford English Dictionary, way back in 2012, in a blog post by Peter Wilding.

The decision came in an update to the third edition of the dictionary, put together by some 50-60 lexicographers, and was put online last month.

It gives the definition of the word as: “the (proposed) withdrawal of the United Kingdom from the European Union, and the political process associated with it”.

And it points readers to a BlogActiv post by Peter Wilding, Stumbling toward the Brexit: Britain, a referendum, and an ever-closer reckoning.

That dates from 15 May 2012 – some four years and one month before the fateful June 2016 referendum.

The next earliest usage of the word the Oxford University Press lexicographers could find comes from some five months later, in October 2012, in the Christian Science Monitor.

That piece asks: “Why would the EU consider special economic and trading privileges for Britain after its ‘Brexit’?” – a question many in Brussels, if not London, are still asking today.

Brexit means…Brexit

Whilst the OED definition is both narrow – and vague – enough to satisfy most people, the UK Prime Minister, Theresa May, has her own, more self-reflexive, definition: “Brexit means Brexit.”

Quite what that means, perhaps only May herself knows. The UK political class is currently engulfed in the argument – also lexicographical – over ‘hard Brexit’ versus ‘soft Brexit’.

Or, as former minister Michael Gove, and other Leave campaigners, prefer ‘clean Brexit’ or ‘full Brexit’ should replace ‘hard Brexit’.

Wilding, who was then working for BskyB when he wrote the post, before leaving to set up British Influence, a cross-party Remain campaign, told euractiv.com “The brutal truth of it is I wrote this blog post, and then promptly forgot all about it.

“Until this summer I got a phone call saying that the Oxford English Dictionary were going to put it in [the dictionary], and I realised I must have coined it.

“I can’t pretend there was any ‘lightbulb’ going off above my head as I though of it – I think I must have been thinking of ‘Grexit’, which was the flavour of the month at the time, and come up with ‘Brexit’ as another portmanteau word.

“Having invented ‘Brexit’, we [British Influence] are now taking the British government to court to try to ‘solve’ it,” Wilding added, referring to the case being heard by the High Court to allow parliament a say in debating the negotiating terms of Brexit.

That case is due to be heard on either the 19th or 20th of January, with May then set to give a keynote speech setting out the government’s negotiating objectives sometime in February, before Article 50 itself is triggered in March.

Wilding, whilst modest about his own invention, is sceptical that further such coinages – such as ‘Frexit’, for a French EU exit under a possible Marine Le Pen presidency – “slip off the tongue quite so well.”

David Charter, the then-Brussels correspondent for The Times, now in Berlin, is thought to have written the first full-length work on Brexit, his book Au Revoir Europe, published later in 2012.

The Oxford English Dictionary, published by the Oxford University Press, is widely-regarded as the ultimate recorded and arbiter of the English language – or, at least, British English.

It dates back to 1857, although the first edition was not published until 1884.

The 1989 second edition runs to 20 volumes, and some 22,000 pages.

Since 1989, the OED has been entirely online, with a ‘third edition’ a continuing project.