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The Collaborative International Dictionary
Machinating

Machinate \Mach"i*nate\, v. i. [imp. & p. p. Machinated; p. pr. & vb. n. Machinating.] [L. machinatus, p. p. of machinari to devise, plot. See Machine.] To plan; to contrive; esp., to form a scheme with the purpose of doing harm; to contrive artfully; to plot. ``How long will you machinate!''
--Sandys.

Wiktionary
machinating

vb. (present participle of machinate English)