Green’s Dictionary of Slang

sociable, fair-dealing, honest; thus die jannock, to die bravely.

1823		Egan Grose’s Classical Dict. of the Vulgar Tongue n.p.: Jonnok. Game, up to the mark. He is jonnok; meaning a good man. Lan. dialect.
1830		W.T. Moncrieff Heart of London III i: You’ll act jannock with two pals in distress.
1834		‘Jack Downing’ Andrew Jackson 122: Let me see that you are jonnok, when these shabharoons of England attack you.
1843		W.T. Moncrieff Scamps of London III i: You’ll act jannock, surely?
1847		Northampton Mercury 17 July n.p.: He said as Mr Smeathers had been so jonick about the clothes.
1868		Bucks Herald 11 Jan. 4/1: Jonnick - liberal, kind, hospitable; I went to see him and he was quite Jonnick.
1871		Times 4 Nov. n.p.: When a gentleman, began by blowing his own trumpet, it was not altogether jannock [F&H].
1875		Jasper Wkly Courier (IN) 1 Oct. 6/3: ‘Bill, we’ll stick to each other, won’t we?’ to which I answered, ’I’m jonnuch if you are ’.
1880		Leicester Chron. 4 Sept. 9/5: Ah! so you says, ’cos I didn’t act jannock with you.
1881		Chambers Jrnl 58 320/1: Ah, Master Westley, you ’re a deep one, you are! [...] But it don’t fare to be ezackerly jonnick.
1882		Sydney Sl. Dict. (2 edn) 5: Jonnick - Right, correct, proper.
1895		Belfast Wkly News 21 Dec. 3/2: The bridegroom was pronounced a ‘regular jannocky bloke’.
1895		Mirror of Life 12 Jan. 15/2: , And then we ‘brass up’ for the food, / We likes to ‘jonick’ be.
1899		‘Pot’ & ‘Swears’ Scarlet City 171: It’s all settled [...] They were all as jonnick as possible.
1900		Sydney Sportsman (Surry Hills, NSW) 28 Nov. 1/1: If Roarty’s claims were jonnick, why did he not leave them to the decision of the club.
1900–10		Stephens & O’Brien Materials for a Dict. of Aus. Sl. [unpub. ms.] 89: JONICK: all right, good.
1906		Sun. Times (Perth) 18 Feb. 4/8: ’E was so jonik — up till yesterday — that I would do ennything he arst —bar lend ’im me dorg.
1910		Truth (Perth) 5 Mar. 9/8: Still I fancies it ain’t Jonnick.
1922		Joyce Ulysses 405: Wha gev ye thon colt? Pal to pal. Jannock.
1922		‘J.H. Ross’ Mint (1955) 118: Go on, mate: it’s jonnuk. I’m on till four, and will let you in.
1925		(con. WWI) Fraser & Gibbons Soldier and Sailor Words 133: Jonnick: According to custom, etiquette, etc.
1927		Smith’s Wkly (Sydney) 20 Aug. 11/2: Eventually the model ‘S.M. Herald’ leader will read like this [...] If we thort ger wun minit Jack Lang wus jonnick we’d shut our face.
1941		Western Times 18 Apr. 3/3: Mind you, Mrs Annaferd had’n bin proper jonnick about it.
1953		T.A.G. Hungerford Riverslake 166: ‘Got the knife right into him.’ ‘Jonic?’ ‘Jonic!’.
1958		(con. 1940s) B. Behan Borstal Boy 264: ’E did look well in them though, that’s jannock.
1968		S. Gore Holy Smoke 65: That’s jonnick, ain’t it?
1975		‘Greetings from Darzet’ [poem printed on postcard] And darned if I bain’t glad to add / Tis jonnick what I zay!