English
Remainer
From remain + -er (ideological suffix).
Formed from remain + -er
Proto-Indo-European *men- ‘to stay’
Latin maneō ‘to stay, remain’
Latin remaneō ‘to remain, stay behind’
Old French remanoir
Middle English remainen
English remain
Today it means
noun Someone who supports the United Kingdom remaining within the European Union.
Language periods are conventional ranges, not dates for this word.
Etymograph / Remainer