Green’s Dictionary of Slang

(Aus./N.Z.) a mild oath; esp. as dicken on/to that! enough of that! the hell with that! stop it!

1825		‘John Lump’s Journey From New York’ Universal Songster I 35: And there I zeed, odds-dickens, / A cart, just like a bowl.
1877		‘Poor Little Joe’ in Laughing Songster 32: Dickens and daisies! Somebody had put on my leather breeches and left me nought.
1894		Truth (Sydney) 30 Sept. 1/5: Dicken, or I’ll slap yer jaw.
1895		Coburg Leader (Vic.) 3 Aug. 1/6: Ailly B. told his father that he got hit with a cricket ball. Dicon.
1895		Coburg Leader (Vic.) 27 July 1/6: If Bertha thinks the boys believe what she told them about her being engaged, she is much mistaken [...] Dickon to that tale.
1902		Bulletin (Sydney) 27 Dec. 10/4: IN PUSH SOCIETY. – MARRIED FOR KEEPS. / Sissie: ‘Lot’s o’ the blokes what marries nowadays can’t keep a wife.’ / Harry: ‘Dicken! The real trouble with lots o’ blokes what marry nowadays is that they can’t get rid o’ them.’.
1904		Sydney Sportsman (Surry Hills, NSW) 2 Mar. 3/2: ‘Dickin to you,’ surlily growled the man.
1911		E. Dyson ‘An Amorous Boy’ in Benno and Some of the Push 179: ‘Dicken there, Feathers,’ chimed in Benno; ‘let the kid be.’.
1911		L. Stone Jonah 68: Dickon ter you [...] yer needn’t think they’re got up to kill ter please yous.
1916		C.J. Dennis ‘To the Boys Who Took the Count’ in Moods of Ginger Mick 102: Ar, dickin to swank! when it comes to a mill, / It’s the bloke wiv a punch ’oo’s yer friend.
1933		L. Stone Larrikin 307: Dickon – expression of disbelief.
1944		Courier Mail (Brisbane) 3/4: [headline] Dig, Dig, Dig, Dig — Dicken!
1959		G. Slatter Gun in My Hand 44: No. Dicken on that.
1968		S. Gore Holy Smoke 52: Eh, dickin on it, Lord!
1988		McGill Dict. of Kiwi Sl. 36/1: dicken disgust or disbelief or surprised belief, in form of an interjection, largely replaced by ‘really!’ or ‘really?’; an antipodean contraction of ‘the dickens’ or ‘what the dickens!’, being a euphemism for the devil. – dicken on that! go easy, will you!; eg ‘You want me to help you lift that dirty big post? Dicken on that, mate.’.
2003		McGill Reed Dict. of N.Z. Sl. [as cit. 1988].