Given a set of five words, generate the word from the set that does not belong (i.e. is the least relevant) with the other words. Words are separated by commas.
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Question: ugly, absorption, vitamin c, fat, thin

Answer: vitamin c


Question: fair, well, milky, medium, loyal

Answer: loyal


Question: unwarranted, truffles, heavy, cookies, fudge

Answer:
unwarranted