Mammoth Uncensored Word List:
26 words ending with ee, 10 letters long

biographee chimpanzee corroboree cottontree covenantee dischargee distinguee distrainee doubletree familytree franchisee interrogee manteltree mantletree oxygenfree peppertree persecutee questionee recognisee recognizee saddletree singletree sixtythree supervisee transferee tweedledee