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]: pastry, dunker, fritter, blow, cake
[A]: blow


[Q]: bike, flap, fly, walk, wave
[A]: walk


[Q]: emotional state, up, down, remorseful, ashamed
[A]:
up