IPA: /nɔːrθˈwɛstərli/
KK: /nɔrθˈwɛstərli/
Describing something that comes from or is located in the direction of the northwest.
The wind was blowing in a northwesterly direction, bringing cooler temperatures.
In the direction of the northwest.
The wind is blowing northwesterly today, bringing cooler temperatures.
Northwesterly is formed from "north" (from Old English "norð", meaning the direction toward the North Pole) and "west" (from Old English "west", meaning the direction toward the setting sun) combined with the suffix "-erly" (meaning in the manner of). The word describes a direction that is toward the northwest, combining the two cardinal directions of north and west.
Think of the direction 'north' and the direction 'west' coming together to describe a way of moving or facing — that's what 'northwesterly' means.