take a risk
take a gamble
try one's luck
riskily
take a flutter
run the risk
gamble
take a chance
go out on a limb
tempt fate
chance one's arm
venturesome
tickle the dragon's tail
riskish
dodgy
high-wire
disaster waiting to happen
put one's ass on the line
imperil
lay on the line
hazardize
roll the dice
throw caution to the wind
razor's edge
risk
endanger
riskable
tinderbox
audaciousness
precipice
high-risk
hazard
plightly
forlorn hope
crapshoot
roll of the dice
risky
hot water
safen
chance
venture
risking
chopping block
dare
gnarly
daring
salto mortale
unchancy
live dangerously
chancy