Green’s Dictionary of Slang

double adv.

a qualifying adv. that intensifies a v. or adj.

[UK]P. Holland (trans.) Suetonius’s Historie of Twelve Caesars (1899) II 280: [S]o obsequious and double diligent besides.
[UK]‘Alfred Crowquill’ Seymour’s Humourous Sketches (1866) 9: ‘Vot a rum cove that ’ere is,’ said Grubb. ‘Double stout, eh?’ [...] and certain it is, that, although the artist has [...] only given us a draught of the landlord, he was a subject sufficient for a butt!
Davy Crockett’s Almanack n.p.: We [...] war double ready for a fight [HDAS].
[US]J.R. Lowell Biglow Papers 2nd series (1880) 13: I’m doubledashed ef you ain’t him thet stole my yeller chettle.
[Aus]H. Nisbet Bushranger’s Sweetheart 34: He blew the gaff and I had to hop double quick.
[US]H.C. Witwer Fighting Blood 5: I’m double cuckoo! I don’t know what it’s all about.
[US](con. 1905–25) E.H. Sutherland Professional Thief (1956) 9: Watch out for that big red-headed saleswoman; she is double smart.
[US]Mezzrow & Wolfe Really the Blues 117: The way we kept shovelling all that fine pastry into our faces while we listened to the music was double kicks.
[WI]S. Selvon Lonely Londoners 119: If you linger she tell you to double — off.
[UK]T. Taylor Baron’s Court All Change (2011) 12: [R]eal busy she was, flying around the place in a double hurry.
[UK]L. Dunne Goodbye to The Hill (1966) 61: She used to be double-choked at the way he said ‘kid’.
[UK]G.F. Newman A Prisoner’s Tale 73: ‘Oh, he reckons there’s a double-good chance of me getting a result,’ Lynn lied.
[UK]S. Berkoff West in Decadence and Other Plays (1985) 100: Some slags he pulled from Dalston double-hot in keenness. [Ibid.] 101: Yeah I double fancy that.
[UK]B. Hare Urban Grimshaw 147: Most people thought me ‘dodgy’, [...] a few even alleged that I was ‘double-bent.’.
[UK]J.J. Connolly Viva La Madness 100: Two minutes before Dougie was chopping double-horny Cressida.

In phrases

go double (v.)

1. (US campus) to go out on a date.

[US]E.H. Babbitt ‘College Words and Phrases’ in DN II:i 32: double, n. In phrase ‘go double’, to acompany a young lady, as to an entertainment.

2. (US tramp) to sleep with someone; to have sexual intercourse.

[UK]J. Worby Other Half 61: Oh gee! If I hadn’t fell for you the way I did, I’d never have gone double with you and let you do what you did.
play (someone) double (v.)

to trick, to betray sexually.

[US] ‘Minnie May’ in J.J. Niles Singing Soldiers (1927) 35: Now Abner didn’t mind dat gal rompin’ aroun’ / But when she played ’im double, he put ’er under de groun’.

In exclamations