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]: emotional state, opposite of up, unhappy, down, miserable
[A]: opposite of up


[Q]: cake, fudge, rich, invent, cream
[A]: invent


[Q]: strap lock, emotional upsets, string, fret, board
[A]:
emotional upsets