accident
breakers ahead
cardhouse
cause for alarm
chance
compromise
crisis
danger
dangerous ground
emergency
endangerment
exposure
gaping chasm
gathering clouds
hap
hazard
house of cards
imperil
imperilment
jeopard
jeopardize
liability
menace
openness
pass
peril
pinch
plight
predicament
quicksand
risk
rocks ahead
sensitiveness
storm clouds
strait
susceptibility
thin ice
threat
uncertainty
vulnerability
health hazard
moral hazard
occupational hazard
sword of damocles
disadvantage
fluctuation
inconvenience
miscalculation
misgiving
perplexity
suspense
torment
trepidation
urgency