designing

adj : 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 scheming

n : the act of working out the form of something (as by making a sketch or outline or plan); "he contributed to the design of a new instrument" syn design

Source: WordNet. Princeton University