
1) Better at conniving 2) Better at guile 3) Better at scheming 4) Comparatively cagy 5) Comparatively cunning 6) Comparatively foxy 7) Comparatively slick 8) Comparatively surreptitious 9) Craftier 10) Foxier 11) Harder to nail down 12) Harder to outfox 13) Harder to outwit 14) Less aboveboard 15) Less candid
Found on
https://www.crosswordclues.com/clue/slier
No exact match found.