northwestward       
 adverb uk/ˌnɔːθˈwes.twəd/ us/ˌnɔːrθˈwes.twɚd/ (also northwestwards)
 向西北地,朝西北地
towards the northwest
  The road went northwestward over the hills. 这条路越过丘陵向西北方向延伸。 
 northwestward       
adjective uk/ˌnɔːθˈwes.twəd/ us/ˌnɔːrθˈwes.twɚd/
 向西北的,朝西北的
towards the northwest
  They were moving in a northwestward direction. 他们向西北方向移动。