English
Leaver
From leave + -er (ideological suffix).
Formed from leave + -er
Proto-Indo-European *leyp- ‘to stick’
…
Proto-Germanic *laibijaną ‘to let stay’
Proto-West Germanic *laibijan ‘to leave behind’
Old English lǣfan ‘to leave’
Middle English leven ‘to leave’
English leave
Today it means
noun Someone who supports Brexit, the United Kingdom's exit from the European Union.
Language periods are conventional ranges, not dates for this word.
Etymograph / Leaver