ADJ.
pretty, shut
VERB + DUBBER
dishonoured
DUBBER + NOUN
you're
ADV.
generally
noun
One who dubs, or gives a name.
[…]thus to knight someone lacking in virtue dishonoured the dubber.
A person who records or adds a dubbed soundtrack to a film.
A person's mouth or tongue.
"Well, Sal, you mum your dubber pretty generally, but when you do slacken your glib you may as well do it civilly."
"Shut your dubber. Think you're a regular duchess, you do, eh? I ain't answering no more questions."
noun
A globular vessel or bottle of leather, used in India to hold ghee, oil, etc.
[…]thus to knight someone lacking in virtue dishonoured the dubber.
Wiktionary"Well, Sal, you mum your dubber pretty generally, but when you do slacken your glib you may as well do it civilly."
Wiktionary"Shut your dubber. Think you're a regular duchess, you do, eh? I ain't answering no more questions."
Wiktionaryi Register
In some senses, dubber is marked as obsolete, slang, UK. Watch for register when choosing this word.