Of, related to, located in, or from the northeast(adjective)
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Use "northeastern" in a sentence
"During one 90-minute stretch in northeastern Zambia, beginning at Mkushi, I did not see a single farm or village."
"One fall, hunting the bottom of a ridge in northeastern Pennsylvania, I kicked up a woodie from a depression in the ground not much bigger than a utility sink."
"And they found it, and a lot of it, all over the Navajo homeland in northeastern Arizona, which is where my next guest's book takes places."