DEVIOUS

[adjective] - (of people or plans and methods) dishonest, often in a complicated way, but often clever and successful, or (of roads etc.) indirect, not going the straight wayYou have to be a bit devious if you're going to succeed in business.He has some kind of a devious scheme for avoiding taxes.You'd better watch him - he's a devious bastard!He took a rather devious (= indirect) route which avoids the city centre. deviously [adverb]