Green’s Dictionary of Slang

(N.Z./UK) sufficient.

[1779		in F. Moore Songs and Ballads of the Amer. Revolution (1855) 263: Our brethren [...] Are at their last prayers, / And of fighting have had quantum suff].
1904		‘G.B. Lancaster’ Sons O’ Men 13: ‘I’ve ’ad suff of this,’ he said. ‘We’ve grafted ten hours, an’ I’m done in.’.
1915		Pittsburgh Press (PA) 29 Aug. 48/2: ‘A word to the wise are suffish, ain’t it?’.
1916		T. Burke Limehouse Nights 296: ‘No, but, Punditt, I —’ ‘Suffish. Make a noise like a hoop and roll away!’.
1948		Dly News (NY) 20 Aug. 24/3: [advert] The first two floors of our Main Building are air condish suffish to get feeling cucumber-ish.
2003		McGill Reed Dict. of N.Z. Sl. 203: suff Enough, as in ‘sufficient’. From c1880.
2005		Arizona Republican (Phoenix, AZ) 7 Jan. EC2/7: [job advert] Open until a suff number of apps have been received.