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: bats, pounce, cockroach, bike, fly

A: bike
****
Q: blue, wave, current, timely, drink

A: timely
****
Q: club, meeting, group, doorstep, clan

A:
doorstep
****