Green’s Dictionary of Slang

scheme v.

1. (Irish) to play truant (from).

[Ire]S. MacManus Rocky Road to Dublin n.p.: He was strongly tempted to scheme school [...] Often, boys did so scheme [BS].

2. (mainly S.Afr., also scheme up) to think, to ‘reckon’.

[US]R.L. Bellem ‘Dissolve Shot’ Dan Turner – Hollywood Detective May 🌐 She refused to tear up her contract, so he schemed up a plan to save the huge salary he was paying her.
[US]E. Thompson Caldo Largo (1980) 277: I told her the story as I had schemed it.
[SA]Frontline Oct. 61: The skate has his own dialect [...] ‘I got a graft, a cabbie, I got stukkies, booze, and I got zol. I tune you, mate, if I can get one mamba chow a day, I scheme life is kif.’.
[SA]P. Hotz Muzukuru 3: Hell, back in those days us ouens schemed the idea of a goffel terr [...] a goffel terr – was as ridiculous as a bloke getting pregnant.
[SA]A. Lovejoy Acid Alex 69: I skiem we’re okay. The noere will probably skiem it was a coloured laaitie.
[SA] in ‘Ben Trovato’ On the Run 270: I scheme the poor old toppie really kakked himself when he read your article.

In derivatives

schemish (adj.) (also schemey)

(US black/P.R.) cunning.

[US]Shelby & Stoney Po’ Buckra 201: Purse looked well ahead; he was ‘schemey’.
[US](con. 1985–90) P. Bourjois In Search of Respect 46: I was learning to be schemish and steal fruit from the fruit stand and stuff like that.

In phrases

scheme (on) (v.) (orig. US black)

1. to make sexual designs on.

[US]C. Cooper Jr Scene (1996) 286: The girls sittin round in the restaurants schemin on their men.
[US]E.E. Landy Underground Dict. (1972).
[UK]J. Mowry Way Past Cool 81: I never seen you schemin a girl, man.
[US]UGK ‘Chrome Plated Woman’ 🎵 These niggaz schemin on my young hoe.
[US]C. Eble (ed.) UNC-CH Campus Sl. Spring 2014.

2. to make plans (for someone/something).

[US]M. Braly On the Yard (2002) 88: And they would start scheming on the money that would further enrich Chilly Willy.
[US]E. Bunker Animal Factory 26: Sit down here, boy . . . an’ help us scheme on gettin’ them narcotics.
[UK]J. Mowry Way Past Cool 66: This our ground, Deek! Why you come schemin round here?
[US]F.X. Toole Rope Burns 23: I knew that Ike was scheming on the punk.
[US]G. Pelecanos Night Gardener 311: Ray Benjamin’s quiet, till you scheme him.
[US]Burns & Pelecanos ‘That’s Got His Own’ Wire ser. 4 ep. 12 [TV script] Felt like you all schemin’ us. This class is the same as the one down the hall.
[US]G. Hayward Corruption Officer [ebk] cap. 7: These individuals don’t care about you [...] They don’t have anything to do all day but scheme on you.
scheme out (v.) (also scheme)(US)

1. to deceive, to trick.

[UK]D. Ahearn Confessions of a Gunman 208: I might try to scheme you out with a girl.
[US]Burns & Pelecanos ‘That’s Got His Own’ Wire ser. 4 ep. 12 [TV script] I sweated him, you know.Hhe wasn’t tryin’ to scheme me.

2. to plan.

[US]J. Lait Gangster Girl 7: Then he schemed out his big deals and his broad campaigns.