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: lower, backward, down, falling, shameful

A: shameful
****
Q: stern, frank, weenie, harsh, concise

A: weenie
****
Q: tumble, autumn, hiems, fall, equinox

A:
tumble
****