west-northwestward

or west-north·west·ward·ly

[west-nawrth-west-werd or west-nawrth-west-werd-lee; Nautical west-nawr-west‐]Nautical
adverb
  1. toward the west-northwest.

Origin of west-northwestward

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018