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.

[Q]: confident, popular, classy, cool, chill
[A]: chill


[Q]: fritter, whittle, divide, misuse, dumpling
[A]: dumpling


[Q]: neat, beautiful, dull, fine, firstrate
[A]:
firstrate