Where does “northwesterly” come from?

Northwesterly derives from English northwest, which combines north from Old English norþ, ultimately from Proto-Indo-European h₁en, meaning to go in or below.

northwesterly (English): situated in, or pointing to, the northwest;...

Definitions

  1. situated in, or pointing to, the northwest;...

Ancestry of “northwesterly”, step by step

northwesterly traces back through two separate lines of ancestry.

via English North

StepLanguageWordMeaning
1EnglishNorthAny of various particular regions named for the cardinal direction in which they lie
2FrenchNordnorth
3Middle Frenchnordnorth
4Old Frenchnortnorth
5Old Englishnorþnorth
6Proto-Germanicnurþrąnorth, northern; north, northward
7Proto-Germanicnurþraznorth, northern
8Proto-Indo-European*nérbelow the surface, below

via English westerly

StepLanguageWordMeaning
1EnglishwesterlySituated in the west; Coming from the west;...
Every word from Proto-Indo-European *nér
northwesterly — Etymology, Origin & Word History | Etymology Explorer