Comparatively foxy

• More calculated
• Better with trickery
• Less forthright
• "The ___ the theft, the sweeter the honey": Edmund Clarence Stedman
• More crafty
• Sneakier
• Craftier
• More calculating
• Not so straightforward

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Sly \Sly\, a. [Compar. Slier or Slyer ; superl. Sliest or Slyest .] [OE. sli, slegh, sleih, Icel. sl?gr, for sl?gr; akin to Sw. slug, Dan. slu, LG. slou, G. schlau; probably to E. slay, v.t.; cf. G. verschlagen sly. See Slay , v. t., and cf. Sleight .] ...