Of, facing, situated in, or related to the south-east (adjective)
Blowing from the south-east; south-easterly (adjective)
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Use "south-eastern" in a sentence
"To prevent confusion, Lieutenant Pollock had insisted that the lower centre-stake be driven first, next the south-eastern; and so on around the four sides, including the upper centre-stake on the way."
"An earthquake in south-eastern Turkey has killed more than 200 people, with hundreds more casualties feared."
"At one crumpled four-storey building in Ercis a team of firemen from the largest south-eastern city of Diyarbakir were trying to reach four children believed trapped deep in an apartment block as concerned bystanders looked on."