Source : WordNet®

risky
     adj 1: involving risk or danger; "skydiving is a hazardous sport";
            "extremely risky going out in the tide and fog"; "a
            venturesome journey in wintertime"; "a venturous
            enterprise" [syn: {hazardous}, {venturesome}, {venturous}]
     2: not financially safe or secure; "a bad investment"; "high
        risk investments"; "anything that promises to pay too much
        can't help being risky"; "speculative business
        enterprises" [syn: {bad}, {insecure}, {high-risk}, {speculative}]
     [also: {riskiest}, {riskier}]

riskiest
     See {risky}