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]: forward, opposite of up, unhappy, downward, down
[EX A]: unhappy

[EX Q]: fret, nervous, board, fingerpick, jack
[EX A]: nervous

[EX Q]: wrongful, fudge, unwarranted, fix, cake
[EX A]:
cake