“Brexit” (Great Britain/British + exit) is a word created to define a possible British exit from the eurozone. “Brexit” has been cited in print since at least May 2012. A similar term—“Brixit” (Great Britain/British + exit)—was used in June 2012.
 
“Grexit” (Greece/Greek + exit) was coined in February 2012 and was clearly the inspiration for “Brexit.” “Gerxit” (Germany/German + exit) and “Spexit” (Spain/Spanish + exit) both date from May 2012.
     
Twitter 
Brand EU
‏@Brand_EU
The Czech Prime Minister warned that a #British exit from the #EuropeanUnion could influence his country to follow suit…“CZEXIT” next?
4:00 AM - 25 Feb 2016
     
The Wall Street Journal
Britain’s EU Choice: ‘Brexit’ or ‘Bremain’?
As Britain debates whether to leave the European Union, the coined words ‘Brexit’ and ‘Bremain’ get a workout
By BEN ZIMMER
Feb. 26, 2016 10:12 a.m. ET
(...)
Mr. Rahbari’s coinage circulated quickly among observers of the European economic crisis, and soon it spawned portmanteau words involving other countries, such as “Spexit” for Spain, “Frexit” for France, “Czexit” for the Czech Republic and “Fixit” for Finland.
 
Twitter 
Noah Smith
‏@Noahpinion
UK: Brexit
Czech Republic: Czexit
Italy: Itaxit
Ireland: Irexit
Poland: Polaxit
Spain: Spainxit
Germany: Gerxit
Luxembourg: ...who cares…
6:03 PM - 6 Apr 2016
 
Newsweek
SWEDES COULD SUPPORT A ‘SWEXIT’
BY JOSH LOWE ON 4/18/16 AT 3:00 AM
Britain is facing the possibility of “Brexit,” The Czech Prime Minister recently fretted about “Czexit,” and Marine le Pen has been gleeful at the level of support for “Frexit.” Now it’s time for a new portmanteau in Europe’s mounting identity crisis; a poll shows there could be support for a “Swexit.”
 
Only 39 percent of Swedes think it’s a “good idea” that Sweden is in the European Union compared to 59 percent in autumn 2015, The Local reports.