THESAURUS
champaign
alkali flat, alluvial plain, bailiwick, basin, bottomland, bushveld, campo,
champaign country, coastal plain, delta, demesne, desert, domain, dominion, down, downs, fell, flat, flat country, flatland, flats, grass veld, grassland, heath, lande, level, llano, lowland, lowlands, lunar mare, mare, mesa, mesilla, moor, moorland, open country, pampa, pampas, peneplain, plain, plains, plateau, playa, prairie, province, salt flat, salt marsh, salt pan, savanna, sebkha, sphere, steppe, table, tableland, terrain, territory, tree veld, tundra, upland, vega, veld, walk, weald, wide-open spaces, wold
ROGET THESAURUS
champaign
Plain
N
plain, table-land, face of the country, open country,
champaign country, basin, downs, waste, weary waste, desert, wild, steppe, pampas, savanna, prairie, heath, common, wold, veldt, moor, moorland, bush, plateau, campagna, alkali flat, llano, mesa, mesilla, playa, shaking prairie, trembling prairie, vega, meadow, mead, haugh, pasturage, park, field, lawn, green, plat, plot, grassplat, greensward, sward, turf, sod, heather, lea, ley, lay, grounds, maidan, agostadero,
champaign, alluvial, campestral, campestrial, campestrian, campestrine.