Unturned with a plough, and thus retaining its original vegetation (usually grass).(adjective)
Unexplored or unknown.(adjective)
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Use "unploughed" in a sentence
"That means all those guys and gals are fertile and unploughed territory for Obama and Hillary."
"Most of the remaining unploughed habitat is represented by strongly modified and fragmented communities on relief positions (gullies, areas around lakes and hill slopes) or soil types (sandy or salty soils), that are not suitable for ploughing."
"The leafless trees lay without motion against the dun sky; the forms of frost, mimicking the foliage of summer, strewed the ground; the paths were overgrown; the unploughed cornfields were patched with grass and weeds; the sheep congregated at the threshold of the cottage, the horned ox thrust his head from the window."