The Collaborative International Dictionary of English v.0.48:

Scheme \Scheme\, v. t. [imp. & p. p. Schemed; p. pr. & vb. n.
   Scheming.]
   To make a scheme of; to plan; to design; to project; to plot.
   [1913 Webster]

         That wickedness which schemed, and executed, his
         destruction.                             --G. Stuart.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Scheming \Schem"ing\, a.
   Given to forming schemes; artful; intriguing. --
   Schem"ing*ly, adv.
   [1913 Webster]

WordNet (r) 3.0 (2006):

scheming
    adj 1: used of persons; "the most calculating and selfish men in
           the community" [syn: calculating, calculative,
           conniving, scheming, shrewd]
    2: concealing crafty designs for advancing your own interest; "a
       selfish and designing nation obsessed with the dark schemes
       of European intrigue"- W.Churchill; "a scheming wife"; "a
       scheming gold digger" [syn: designing, scheming]