instruction:
Given a category and a set of five words, find the word from the set that does not belong (i.e. is the least relevant) with the other words in the category. Words are separated by commas.
question:
Category: type of rigidity 
Words: rigged, firm, unyielding, streamline, taut
answer:
streamline


question:
Category: emotional status 
Words: sad, remorseful, down, ashamed, sliding
answer:
sliding


question:
Category: fried food 
Words: dumpling, pastry, dessert, fritter, waste away
answer:

waste away