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]: streamline, sustainability, private, firm, stiff
[A]: stiff


[Q]: closest, finished for the day, bordering, nearest, close
[A]: finished for the day


[Q]: firm, leverage, rigged, alignment, llc
[A]:
rigged