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: mild, cold, level, stormy, fair

A: level
****
Q: neat, beautiful, dull, fine, firstrate

A: firstrate
****
Q: miserable, down, disgusted, melancholy, opposite of up

A:
opposite of up
****