Green’s Dictionary of Slang

cunt v.

[fig. use of cunt n. (1)]

1. to abuse a woman by callling her a cunt.

[UK] in D’Urfey Pills to Purge Melancholy IV 324: She scolded so loud, And continued her Clamour; I could not forbear, But to C-- her and D-- her.

2. to destroy, to defeat, whether physically or otherwise.

Merauder on Urban Dict. [Internet] Cunt verbal form, ie, ‘to cunt’, ‘he cunted’, ‘she cunts’ – to delete/kill/hurt/smack etc. ‘He cunted him pretty bad’.
SqueeZe on Urban Dict. [Internet] cunted Just been back stabbed – really really badly. You’ve just been cunted!
[UK](con. 1980s) I. Welsh Skagboys 271: [of heroin] Ah’ve been tryin tae avoid the Scottish skag [...] The broon’s easier: doesnae seem tae cunt ye up sae much.