1661, risque, from Fr. risque, from It. risco, riscio (modern rischio), from riscare "run into danger," of uncertain origin. The Anglicized spelling first recorded 1728. Sp. riesgo and Ger. Risiko are It. loan-words. The verb is from 1687; risky first recorded 1826.
run the risk. Be subjected to danger, as in Hiding anything from customs means running a risk that you'll be caught, or Without the right postage and address, this package runs the risk of being lost.