Definition of Brexiter in English:

Brexiter

noun

British
informal
  • A person who is in favour of the United Kingdom withdrawing from the European Union:

    ‘many Brexiters would like to follow the Norwegian model’
    ‘this was not another scary intervention in the referendum debate by a pro-European or a Brexiter’

Origin

Early 21st century: from Brexit + -er.

Pronunciation

Brexiter

/ˈbrɛksɪtə/