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]: handsome, dull, flyaway, attractive, fine
[A]: flyaway


[Q]: centimeter, yard, foot, milimeter, head
[A]: head


[Q]: backward, down, below, ground, emotional
[A]:
emotional