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.

[EX Q]: kind, down, sad, backward, emotionalities
[EX A]: backward

[EX Q]: pie, fried, misuse, fritter, cake
[EX A]: misuse

[EX Q]: lifeline, blocking, rudder, stern, deck
[EX A]:
blocking