Stupid, but he avoids collisions (5)
I believe the answer is:
crass
(Other definitions for crass that I've seen before include "Boorish about scars" , "Grossly insensitive" , "Witless" , "Grossly stupid, tactless" , "Tactless, boorish" .)
I believe the answer is:
crass
(Other definitions for crass that I've seen before include "Boorish about scars" , "Grossly insensitive" , "Witless" , "Grossly stupid, tactless" , "Tactless, boorish" .)