Green’s Dictionary of Slang

kiddy adj.

[kiddy n.]

1. well-dressed, fashionable, flashy.

[UK]‘Whirligig World’in Hilaria 112: I skim o’er each phiz, / Of the sharp, flat, and blood, natty crop, kiddy quiz.
[UK]W.T. Moncrieff Tom and Jerry I iv: I’ll send for that kiddy artist, Dicky Primefit, the dandy habit-maker, of Regent Street.
[UK]Hereford Jrnl 3 Oct. 4/3: Lots of heavy wet, laid in small quantities among the kiddy grooms and swell Jarveys, depended on this event.
[US]H.W. Forester My Shooting Box 83: It required all his remarkably good looks and quiet manner to redeem his attire from the charge of being kiddy at least, if not tigerish.

2. skilful, esp. in a criminal context.

W. Trench Settlement at Port Jackson 207: A leading distinction, which marked the convicts on their outset in the colony, was an use of what is called the flash, or kiddy language.
[Ire]Tom And Jerry; Musical Extravaganza 54: Kiddy, roguish.
[UK] ‘The Song of the Young Prig’ in C. Hindley James Catnach (1878) 171: Fine draw a coat-tail sure I can’t, / So kiddy is my famble.

3. (also kiddie) pertaining to, or fit for children.

[UK]C. Mackenzie Sinister Street I 103: He also learnt to speak without blushing of [...] ‘my people’ and ‘my kiddy sister’.
[US](con. 1917–18) C. MacArthur War Bugs 110: Our principal danger was from [...] planes skimming low over the road. One of these babies rustled through the trees and ran his kiddie car directly above our heads.
[US]J. Conroy World to Win 324: She knew she was knocked up, she began to ogle the cute baby togs in kiddie shoppes.
[US]H.A. Smith Life in a Putty Knife Factory (1948) 160: A party at which New York City’s leading debutantes [...] rode kiddie cars around a dance floor.
[US]E. De Roo Go, Man, Go! 63: When you gonna show up with something besides that two-wheeled kiddy car?
[US]A.E. Morgan Six-Eleven (1966) 195: Do you really like the home and kiddy bit?
[US]B. Moyers Listening to America 159: It really made me mad when people called the Peace Corps a ‘kiddie korps’.
[US]J. Wambaugh Choirboys (1976) 168: I just hated being a kiddy cop.
[US]J. Ellroy Brown’s Requiem 150: To the right of the living room was a kiddie-room-sewing-room combo.
[US]R. Campbell Sweet La-La Land (1999) 131: Just read the idiot cards. Say a few words before the kiddie cartoons.
[US]E. Bunker Mr Blue 36: You’ve made a little name for yourself in those kiddy joints. This isn’t a kiddy joint. This is a prison.
[UK]Guardian Weekend 4 Mar. 70: This is a kiddiewinkie-free zone, stranger.
[UK]Indep. on Sun. Culture 28 May 8: There is no other British kiddy-pop group putting on a spectacle as big or colourful as this.
[UK]R. Antoni Carnival 112: Aisha Brown, who’d played Minshall’s Queen for years – first as kiddy-carnival Queen.
[UK]J.J. Connolly Viva La Madness 236: The slightest whiff of kiddie nonsense sends London criminals into a homicidal rage.
[UK]J. Fagan Panopticon (2013) 60: I have no empathy for scum. None. I mean, I could kill a kiddie-killer.
[UK]J. Meades Empty Wigs (t/s) 907: [T]hey are digging up kiddy graves for looting toys from coffin.

In compounds

kiddie corps (n.)

(US) a cohort of the young active in a company, government agency, etc.

[US]Bernstein & Woodward All the President’s Men 2365: Rietz had headed a ‘Kiddie Corps’ of young spies for the President.
[US]G. Liddy Will 206: Ken Rietz, who was running the youth program, had some sort of clandestine operation going on. That made three operations: Haldeman's, the committee's own ‘Fat Jack,’ and the Rietz kiddie corps program.
kiddie joint (n.)

(US prison) a low-security federal prison camp for nonviolent or first-time offenders.

[US]P. Earley Hot House 26: Nonviolent and white-collar felons, as well as inmates in their twenties and thirties serving short prison sentences, are supposed to be sent to level-one prison camps, where they live in college-style dormitories and attend therapeutic rap sessions and drug-treatment classes [...] level-one camps are called ‘kiddie joints’ because they are considered the kindergarten of prisons.