Green’s Dictionary of Slang

slapper n.2

[? Yid. schlepper, a unkempt, untidy person or the ‘slapping on’ of make-up]

1. (also slap) a woman, always derog. and usu. implying promiscuity.

[UK]J. Morton Lowspeak.
[UK]Indep. Rev. 18 Aug. 4: Pandora would be the last to say that Tanya is a bit of a slapper.
[Ire]P. Howard Curious Incident of the Dog in the Nightdress 23: I take it you were in flagrante with some little slapper.
[US]J. Salazar Legion of the Lost 133: ‘Looks like tonight we're going to have some Legion birds,’ Sijfert said. ‘Where? [. . . .] That skinny pair?’ ’No, two slappers behind them’.
[Aus]P. Temple Truth 237: Searle and his new slapper can then feed shit to all and sundry about how wonderful Homicide is.
[UK]Sun. Times Mag. 19 Dec. 62/2: There is still no reliable evidence [...] that Rooney ever made love to the grandmother in question [...] also kown as the ‘Auld Slapper’.
[Aus]L. Redhead Thrill City [ebook] Know all about your friend Chloe, the banged-up slapper.
[UK]J.J. Connolly Viva La Madness 144: Embedded in the VIP, arms around a couple of posh slaps.
[UK]R. Milward Kimberly’s Capital Punishment (2023) 276: Heaven knows where he gets the stamina to please these multifarious slappers.
[Ire]L. McInerney Glorious Heresies 256: The sunshine had brought out the slapper in Tara Duane. She was in [...] shorts so small they’d have scarcely made underwear.
[Scot]V. McDermid Insidious Intent (2018) 210: ‘She went through men at quite a rate. Not that she was a slapper or anything’.
[Aus]T. Spicer Good Girl Stripped Bare 312: We will not have a slovenly slapper on stage in our establishment.
[UK]J. Meades Empty Wigs (t/s) 116: Charlotte (Interviewer - I think that was the slapper's name.

2. a prostitute.

[UK]Indep. Rev. 14 Jan. 11: Cheerful slapper Debbie [...] has a feel for the streets.
[UK]M. Manning Get Your Cock Out 78: ‘Would you like the address, sir?’ chirrupped the old slapper.