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: entree, honest, loyalty, frank, fortitude

A: entree
****
Q: gunwale, stern, deck, box, bow

A: box
****
Q: unhappy, opposite of up, lower, down, sliding

A:
unhappy
****