Green’s Dictionary of Slang

an intensified version of absolutely.

1911		La Follette’s Magazine n.p.: It is abso-bloody-lutely true.
1929		(con. 1916) F. Manning Her Privates We (1986) 29: When he got on his feet again, he went abso-bloody-lutely fanti.
1935		E. Weekley Something about Words 24: This natural tendency to add body and content to words is possibly prehistoric [...] A crude example of this persisting instinct is offered by the contemporary abso-bloody-lutely.
1940		M. Catto Punch without Judy 66: Judy. [Trying to laugh] It's terrible, isn't it? That he should be frightened ... of telling me things like that. Micky. Abso-bloody-lutely tragic.
1955		R. Ruark Something of Value 183: Absobloodylutely. You should have seen him in Rome. A treat, he was.
1967		J. Wynnum I’m a Jack, All Right 104: I’m feeling fine. Abso-bloody-lutely fine.
1968		Orlando Sentinel (FL) 2 May 23/4: English slang [...] I cannot lose a tug at heart whenever I hear anyone saying something is abso-bloody-lutely..
1989		(ref. to WWI) H. Rawson Dict. of Invective (1991) 52: They [WWI soldiers] not only used it as an adjective of all work but elaborated it into such combinations as abso-bloody-lutely, hoo-bloody-rah, and of-bloody-course.
2000		Penguin Bk of All-New Aus. Jokes 125: [They] were wondering what horse to back. Overhearing their conversation, a grizzled old cocky said: ‘I’d back mine.’ ‘What’s its name?’ asked Dave. ‘Humdinger,’ said the old cocky. ‘And is it?’ ‘Abso-bloody-lutely.’.
2005		L. Weisbeger Everyone Worth Knowing 159: Doll, I’ll absobloodylutely host the BlackBerry event! We’ll make it the poshest party of the year.