evil and rude
 adj.

    Both evil and rude, but with the additional connotation that the
    rudeness was due to malice rather than incompetence. Thus, for example:
    Microsoft's Windows NT is evil because it's a competent implementation of a
    bad design; it's rude because it's gratuitously incompatible with Unix in
    places where compatibility would have been as easy and effective to do; but
    it's evil and rude because the incompatibilities are apparently there not
    to fix design bugs in Unix but rather to lock hapless customers and
    developers into the Microsoft way. Hackish evil and rude is close to the
    mainstream sense of ?evil?.