[adj] showing self-interest and shrewdness in dealing with others; "a cagey lawyer"; "too clever to be sound"
cagey, cagy, clever, smart
acute, adroit, arch, artful, astute, Byzantine, cagey, calculating, careful, cautious, chary, cheeseparing, circumspect, clever, conserving, crafty, cunning, cute, deceitful, deep, deep-laid, deliberate, designing, devious, dexterous, diplomatic, discreet