lunatic

a.疯狂的 n.疯子

lumber, lumber-jacket, lumber-room, lumberjack, lumen, luminary, luminosity, luminous, luminously, lumme (also lummy), lump, lump sugar, lump sum, lumpish, lumpsum, lumpy, lunacy, lunar, lunar calendar, lunar month, lunatic asylum, lunch, lunch-room, lunch-time, luncheon, luncheon meat, luncheon voucher, lung, lung-power, lunge, lupin (US lupine), lurch, lure, lurid, luridly, luridness, lurk, luscious, lusciously, lusciousness,