'Eurosceptic' originates from the combination of 'Euro-' referring to Europe or the European Union, and 'sceptic,' which comes from the Greek word 'skeptikos,' meaning 'inquirer' or 'doubter.'

'Sceptic' evolved from the Greek 'skeptikos' to the Latin 'scepticus,' and eventually became the modern English word 'sceptic.'

Initially, 'sceptic' meant 'inquirer' or 'doubter,' but in the context of 'Eurosceptic,' it specifically refers to doubt or criticism towards the European Union.