Sloshed
British SlangDefinition
Very drunk; heavily intoxicated.
Examples
"By last orders at the pub, he was absolutely sloshed and needed his mates to bundle him into a taxi."
"We got sloshed at the work do and ended up belting out karaoke on the way to the night bus."
"She turned up to the party already sloshed, knocking over her pint as she tried to say hello."