unparliamentary, adj. — Green’s Dictionary of Slang

unparliamentary adj.

[SE unparliamentary language, as laid down in Erskine May, which covers all Parliamentary procedure]

obscene.

1873		Sl. Dict.
1936		W.J. Blackledge Legion of Marching Madmen 240: [A] greasy Levantine [...] addressed certain remarks to me of an unparliamentary nature.
1939		K. Tennant Foveaux 35: Language is unparl’ment’ry, Duncan.