Menacing, unnerving (8)
I believe the answer is:
sinister
(Other definitions for sinister that I've seen before include "Eerie, alarming" , "Threatening; evil-looking" , "Threatening - ominous" , "What is left on bearings" , "Very unpleasant" .)
I believe the answer is:
sinister
(Other definitions for sinister that I've seen before include "Eerie, alarming" , "Threatening; evil-looking" , "Threatening - ominous" , "What is left on bearings" , "Very unpleasant" .)