Mammoth Uncensored Word List:
19 words ending with id, 14 letters long

allotetraploid autotetraploid brachypinakoid calcaneocuboid cercopithecoid chlorophylloid corticosteroid frontosphenoid galeopithecoid glucocorticoid hydrocephaloid lepidodendroid micrometeoroid neanderthaloid periamygdaloid philanthropoid thyroarytenoid trypanosomatid vespertilionid