Wikipedia
Euroscepticism (also known as EU-scepticism or anti-EUism) is criticism of and strong opposition to the European Union (EU). Traditionally, the main source of Euroscepticism has been the notion that integration weakens the nation state, and a desire to slow, halt or reverse integration within the EU. Other views often held by Eurosceptics include perceptions of a democratic deficit in the European Union or a belief that it is too bureaucratic. Euroscepticism should not be confused with anti-Europeanism, which refers to the rejection of the culture of Europe and Europeanisation, and sentiments, opinions and discrimination against European ethnic groups. A Eurobarometer survey of EU citizens in 2009 showed that support for membership of the EU was lowest in Latvia, the United Kingdom, and Hungary. By 2016, the countries viewing the EU most unfavorably were Greece, France, Spain and the UK. Euroscepticism is found in political parties across the political spectrum; however, the rise in populist right-wing parties in Europe is strongly linked to a rise in Euroscepticism in the continent.
In recent years, Eurosceptic movements across the continent have seen significant influxes in popular support, most notably illustrated through the United Kingdom withdrawal from the European Union.