Having hidden dangers (11)
I believe the answer is:
treacherous
(Other definitions for treacherous that I've seen before include "Not true" , "Not to be trusted" , "Unreliable" , "covered in ice?" , "Disloyal; dangerous" .)
I believe the answer is:
treacherous
(Other definitions for treacherous that I've seen before include "Not true" , "Not to be trusted" , "Unreliable" , "covered in ice?" , "Disloyal; dangerous" .)