Mammoth Uncensored Word List:
20 words ending with id, 13 letters long

allopolyploid anaphylactoid antiapartheid autopolyploid carcinomatoid cercopithecid clinopinacoid clinopinakoid diprotodontid endopolyploid haemophilioid hexactinellid histiophoroid hydromedusoid isocarboxazid macropinakoid nondextrinoid orthopinakoid petrosphenoid squamomastoid