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: current, dastards, prompt, course, timely

A: course
****
Q: backward, south, down, forward, shameful

A: shameful
****
Q: cool, scorching, chill, icy, confident

A:
confident
****