1) Arch 2) Artful 3) Astute 4) Cagy 5) Clever 6) Cunning 7) Deceitful 8) Designing 9) Devious 10) Foxy 11) Furtive 12) Guileful 13) Knavish 14) Scheming 15) Shrewd 16) Sly 17) Sly as a fox 18) Tricksy 19) Vafrous 20) Wily 1) Artful 2) Astute 3) Careful 4) Chess engine 5) Clever 6) Clever about boats 7) Cunning 8) Deceitful 9) Deceitfully clever 10) Devious 11) Dexterous 12) Dodgy 13) Exclusively Anglo word 14) Exclusively Saxon word 15) Foxlike 16) Foxy 17) Full of guile 18) Furtive 19) Guileful 20) Ingenious 21) Knavish 
• (a.) Possessing dexterity; skilled; skillful. • (a.) Skillful at deceiving others; characterized by craft; cunning; wily. • (a.) Relating to, or characterized by, craft or skill; dexterous.
Craft'y adjective [ Anglo-Saxon cr...ftig .] 1. Relating to, or characterized by, craft or skill; dexterous. [ Obsolete] ' Crafty work.' Piers Plowman. 2. Possessing dexterity; skilled; skillful. « A noble crafty man of trees. Wyclif. »...
Crafty is RAF slang for skilful, clever, well judged.
[adj] - marked by skill in deception
Another phrase used for a control pitcher.
cunning adjective marked by skill in deception; `cunning men often pass for wise`; `deep political machinations`; `a foxy scheme`; `a slick evasive answer`; `sly as a fox`; `tricky Dick`; `a wily old attorney`
skillful in underhand or evil schemes; cunning; deceitful; sly. · skillful; ingenious; dexterous.