Potentially disastrous (5)
I believe the answer is:
risky
(Other definitions for risky that I've seen before include "Involving a chance of danger" , "Unsafe" , "Hazardous" , "Perilous" , "Chancy" .)
I believe the answer is:
risky
(Other definitions for risky that I've seen before include "Involving a chance of danger" , "Unsafe" , "Hazardous" , "Perilous" , "Chancy" .)