So what derived meanings of קנז are there that mean hunt?

@user8078 I'm not sure what you're asking for. It would be the other way around, קנז is (in theory) derived from an unused root that means hunt.

There's no reason to posit a meaning for a root unless it shows up in some derived word. So what derived words offer this meaning for קנז? As asked in the question: "and if it's "unused", how does one determine its meaning?"

@user8078 I can only guess at their methods. Perhaps the structure of the word קנז was the same as the way a profession word was formed (eg. in English, even if you didn't know "hunt" you could still see that "hunt" is a root of "hunter" off the bat). Perhaps there are archaic words with the same root that I can't find because well, archaic. Basically, I can't tell you how they determined the meaning of the root of קנז without having access to whatever research they did on it.