Mammoth Uncensored Word List:
24 words ending with ne, 16 letters long

alkylcycloalkane cerebellopontine dihydroxyacetone epieugeosyncline fluviolacustrine glaciolacustrine hexachloroethane intercrystalline leptogeosyncline macrocrystalline microcrystalline multicrystalline orthogeosyncline pharyngopalatine phenylethylamine pithecanthropine protocrystalline quasicrystalline sulfaquinoxaline trichlorethylene trichloromethane triiodothyronine triphenylmethane zeugogeosyncline