(obsolete, UK politics, derogatory, slang) Originally a member of the 17th-century Country Party; later a member of the opposition.
No comments yet — say something.
Add your own interpretation of "grumbletonian".
Regional slang from around the English-speaking world — British, Australian, Irish, Caribbean, Nigerian, Filipino, AAVE, and the hyphenated-English dialects that make the internet sound local.
See all Regional & Other slang on Slangora.
Browse all slang words starting with G.