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


[Q]: hire, flame, pay, fire, ban
[A]: flame


[Q]: color, ok, light, fair, texture
[A]:
ok