take a chance, gamble, venture; see chance 2, risk.

chance, gamble, gamble on, venture, hazard, imperil, endanger, jeopardize, run the risk, take a chance, trust to chance, do at one's own peril, expose oneself to, lay oneself open to, stick one's neck out, take the liberty, defy danger, speculate, make an investment, hang by a thread, play with fire, carry too much sail, go out of one's depth, beard the lion in his den, bell the cat, double the blind, sit on a barrel of gunpowder, go through fire and water, leap before one looks, take a leap in the dark, throw caution to the wind, fish in troubled waters, skate on thin ice, sleep on a volcano, live in a glass house, go to sea in a sieve, sail too near the wind, buck the tiger; see also chance 2.