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.

[Q]: Category: aesthetic characteristic 
Words: well, milky, variety, tone, fair
[A]: well


[Q]: Category: location (proximity) 
Words: neighboring, right there, shut down, close, bordering
[A]: shut down


[Q]: Category: weather 
Words: brisk, fair, size, warm, mild
[A]:
size