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: luke, make the grade, fair, milky, deal

A: milky
****
Q: descending, disgusted, emotionalities, emotional supports, down

A: descending
****
Q: wave, current, timely, tide, drink

A:
timely
****