Green’s Dictionary of Slang

to move fast, to hurry, to smarten up; often as excl. jildi! hurry up!

1894		Civil & Milit. Gaz. (Lahore) 18 Oct. 4/3: I tell yer I’m sick o’ the shiny — / An’ if I could jaldi it now.
1948		Partridge Dict. Forces’ Sl. 102: Jildi, hurry! Also get a jildi on. (Indian Army.) jildi move, do, to beat a hasty retreat. General Army slang [...] Among tank men: to take evasive action.
1948		J. O’Connor Come Day – Go Day (1984) 30: Here, come on, juldee!
1972		N. Conway Bloods n.p.: The ranks now included many reservists and young recruits who had to be jildied into professional soldiers [BS].
1980		(con. 1930s) Barltrop & Wolveridge Muvver Tongue 33: ‘Juldi’ for hurry up.
1994		I. Welsh ‘A Blockage in the System’ in Acid House 77: Wuv goat tae jildy. Thir’s fuckin chaos doon at the flats.
2015		I. Welsh Decent Ride 156: Ah’m daein the paintin the day, which ah nearly forgot aboot! So ah’d better jildy!