Synonyms for Downwind (same or very similar meaning)
WordNet sense 1 (towards the side away from the wind):
leeWordNet sense 2 (on the side away from the wind):
leeward, leewardWordNet sense 3 (away from the wind):
windwardWordNet sense 4 (in the direction the wind is blowing):
with the windFrom the ODE community, based on WordNetadd/edit