adventure
     n : a wild and exciting undertaking (not necessarily lawful)
         [syn: {escapade}, {risky venture}, {dangerous undertaking}]
     v 1: take a risk in the hope of a favorable outcome; "When you
          buy these stocks you are gambling" [syn: {gamble}, {chance},
           {risk}, {hazard}, {take chances}, {run a risk}, {take a
          chance}]
     2: put at risk; "I will stake my good reputation for this"
        [syn: {venture}, {hazard}, {stake}, {jeopardize}]
Source: WordNet® 2.0