Green’s Dictionary of Slang

bladdered adj.

drunk.

1998		K. Sampson Awaydays 184: Godden, bladdered, persuades one of the hags that Eddie hasn’t had a shag in six months.
1999		Indep. 21 July 3: I am drunk, he is blotto, they are bladdered.
2008		Guardian 8 Oct. 17/3: Visitors will [...] get thoroughly bladdered while catching replays of key taekwondo moments.
2010		Sun. Times News Review 19 Dec. 13/3: As the Daily Star put it, ‘Nearly one in 10 of is gets bladdered every day’.
2016		Observer 20 Mar. 🌐 We have always been a nation of drunken pissheads where the more bladdered you get, the more funny it is when you tell your peers.