gouge, screw, rig, chisel, fix, slip, lay out, cheat, swindle, rip off, diddle, bribe, gull, shaft, bilk, rook, hornswoggle, funnel (money), pay off, buy off, suborn, take, take advantage of, launder (money), bankroll, incentivize, shell out, pony up, ante up, cough up, front (money), ransom, fleece, defraud, take to the cleaners, take for a ride, grease someone's palm, make a deal, blackmail, fork over, put up, settle up, sting, stiff, pull a fast one on, put one over on
duck, pry, hide, slink, crawl, hunt, skulk, lurk, prowl, stake out, stalk, scout, investigate, spy, shadow, sneak, snoop, lie (low/in wait), creep around, tap (a telephone), search out, nose around, poke around, tiptoe, rummage around, sidle, eavesdrop, overhear, dig around, gatecrash, sneak in