THESAURUS
peninsula
Africa, Antarctica, Asia, Australia, Eurasia, Eurasian landmass, Europe, North America, South America, bill, breakwater, cape, chersonese, continent, coral reef, delta, foreland, head, headland, hook, landmass, main, mainland, mull, naze, ness, point, promontory, reef, sandspit, spit, spur, subcontinent, tongue
ROGET THESAURUS
peninsula
Land
N
land, earth, ground, dry land, terra firma, continent, mainland,
peninsula, chersonese, delta, tongue of land, neck of land, isthmus, oasis, promontory, highland, coast, shore, scar, strand, beach, playa, bank, lea, seaboard, seaside, seabank, seacoast, seabeach, ironbound coast, loom of the land, derelict, innings, alluvium, alluvion, ancon, riverbank, river bank, levee, soil, glebe, clay, loam, marl, cledge, chalk, gravel, mold, subsoil, clod, clot, rock, crag, acres, real estate, landsman, earthy, continental, midland, coastal, littoral, riparian, alluvial, terrene, landed, predial, territorial, geophilous, ripicolous, ashore, on shore, on land.