risky (adj.)
- accidental
- adventitious
- adventurous
- aleatory
- blue
- broad
- casual
- causeless
- chance
- chancy
- contingent
- dangerous
- delicate
- desultory
- dicey
- fatal
- fluky
- fortuitous
- hairy
- hazardous
- iffy
- incidental
- indeterminate
- infirm
- insecure
- insubstantial
- off-color
- perilous
- precarious
- provisional
- racy
- risque
- salty
- scabrous
- sensitive
- shady
- shaky
- shifting
- shifty
- slippery
- speculative
- spicy
- suggestive
- temporary
- tentative
- ticklish
- touch-and-go
- touchy
- treacherous
- uncaused
- uncertain
- undependable
- undetermined
- unexpected
- unforeseeable
- unforeseen
- unhealthy
- unlooked-for
- unpredictable
- unreliable
- unsound
- unstable
- unsteady
- unsubstantial
- unsure
- untrustworthy
- venturesome
- venturous
- wicked
- wildcat