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: joker, fold, check, deck, jab

A: jab
****
Q: down, kind, ashamed, sliding, unhappy

A: sliding
****
Q: confident, popular, classy, cool, chill

A:
chill
****