Green’s Dictionary of Slang

to go on foot, to be off, to leave; esp. as stump it.

1806		G. Colman Yngr John Bull IV i: Now, Sir, you and I’ll stump it.
1821		‘A Real Paddy’ Real Life in Ireland 62: Gram [...] stump and call up Brian Boru – and then be down upon the Quay.
1837		R.M. Bird Nick of the Woods III 166: Then I stumped off to the Injun border.
1842		J. Labern ‘The Larned Dustman’ Comic Songs 28: Thro’ industry I’ve saved some dust, / From bus’ness I’ll soon stump it.
1859, 1860		Hotten Dict. of Modern Sl. etc.
1864		Kentish Gaz. 22 Nov. 2/5: ‘Hello, there! de yer see old ‘Dizzy’ doing a stump?
1873		Sl. Dict.
1900		Sporting Times 14 Apr. 2/1: Last Tuesday being a whole holiday [...] I stumped it once more up the hill which leads, more or less, to perdition.
1908		A.N. Lyons Arthur’s 13: ‘’Ow’re you goin’?’ she asked. ‘Stump it,’ says I.
1971		Wodehouse Much Obliged, Jeeves 37: He said ‘Oh?’ once more and stumped off.
2004		T. Winton ‘Cockleshell’ Turning (2005) 122: When he finally stumps up onto the verandah his mother comes out.