Synonyms for Northeastward (same or very similar meaning)
WordNet sense 1 (the compass point midway between north and east; at 45 degrees):
northeast, NE, nor'-east, northeastWordNet sense 2 (situated in or facing or moving toward or coming from the north):
northWordNet sense 3 (in a northeastward direction):
northeastwardlyFrom the ODE community, based on WordNetadd/edit