There will almost never be a time when you mirrored the last three words of what someone said when they want to go on and explain and reword and expand.
If someone gives you an ultimatum, downplay or reword it with something like, “I know you're reluctant to pay more than 100 galleons for this old wizarding journal, but it really is a rare item.”
So that's the Z there, and it's of no use to me, because the " use" the use, that's the clue, it has the definite article if you reword it, the use of, no use, no use is a noun.