hill Antonyms

lowland ravine rut scissure sewer snowflake spillway steppe strath sulcus swale sward prairie pothole plain mead meadow moat niche ocean orchard paddock pampas pasturage pasture penstock trench trough salt marsh nullah campo dene flatland gulley meadowland pediplain savannah shortgrass throated pastureland rangeland grassland tundra vale valley vega vena vineyard water meadow waterway