shrewdness (n.)

• acumen
• acuteness
• art
• artfulness
• artifice
• astuteness
• cleverness
• craft
• craftiness
• cunning
• deviousness
• discernment
• discrimination
• finesse
• foxiness
• gamesmanship
• guile
• ingeniousness
• insidiousness
• inventiveness
• keenness
• one-upmanship
• penetration
• perspicacity
• readiness
• resourcefulness
• sharpness
• shiftiness
• slickness
• slipperiness
• slyness
• sneakiness
• sophistry
• stealth
• stealthiness
• subtlety
• suppleness
• trickiness
• wariness
• wiliness
• wit