English
Rumper
From rump + -er.
Formed from rump + -er
Proto-Germanic *rumpō ‘trunk of a tree, log’
Middle Low German rump ‘the bulk or trunk of a body, trunk of a tree’
Old Norse rumpr
Middle English rumpe
English rump
Today it means
noun A member or supporter of the Rump Parliament.
Language periods are conventional ranges, not dates for this word.
Etymograph / Rumper