Mammoth Uncensored Word List:
20 words ending with t, 18 letters long

anarchosyndicalist antivivisectionist cathodoluminescent dendrochronologist disenfranchisement electroluminescent ethnomethodologist gastroenterologist gedankenexperiment hydrometeorologist immunohematologist mechanoluminescent micrometeorologist noninterventionist paleoclimatologist preacknowledgement psychoimmunologist psychophysiologist rhinolaryngologist sclerochronologist