Green’s Dictionary of Slang

feck v.2

(mainly Irish) a euph. for fuck v. in various senses.

[UK]S. Murphy Stone Mad (1966) 121: They have enough to do feckin’ around with all the soft jobs.
[UK]L. Dunne Goodbye to The Hill (1966) 173: She doesn’t feck about, that one doesn’t.
[Ire](con. 1930s) L. Redmond Emerald Square 237: ‘G’wan you,’ she snapped. ‘Feck off, head a’ sense, an oul’ man cut short!’.
[Ire]H. Leonard Out After Dark 147: There was a mutinous rumble and cries from the rear of ‘Feck off’.
[Ire]R. Doyle Snapper 192: Even I’d’ve told them to feck off.
[Ire]F. Mac Anna Last of the High Kings 17: Oh feck off out of here, Da said.
[Ire](con. 1970) G. Moxley Danti-Dan in McGuinness Dazzling Dark (1996) I v: cactus: Fag Ber? ber: No, you can feck off. Anyway you owe me.
[UK]Indep. Rev. 23 Mar. 2: ‘Feck’ is a long-established Irish swearword that tends to be used in situations where the ‘real’ F-word would be excessive (’Would you ever feck-off!’ one might say to ones granny).
[SA]Mail and Guardian (Johannesburg) 4 Feb. 🌐 It’s a bit like telling some one to feck off, bru.
[UK]Guardian CiF 2 Jan. 🌐 [Sarah] Vine can feck right off.
[Ire]L. McInerney Rules of Revelation 14: Feck the city, she thought when she was feeling belligerent.
N. Harbison on X 8 Feb. 🌐 I was [...] reading the news on my phone and it was all so depressing I Just said feck it I'll go and do something positive with my day!