Tags can be removed, but the way to do that is to remove them from every question. Once a tag is no longer used, it doesn't exist. For a tag which has only been used once, that's not difficult. Just edit it out; editing without review does need 2k rep.
Tags can be blacklisted so they don't reappear, but for that to happen it's necessary* that it no longer exists in the first place.
The one question to which very has been attached seems to be more about much, which is already covered by the adverb tag. I've removed it.
I'm ambivalent about snowclone. It might be useful as a tag: normally questions generate an answer using the word rather than the question already knowing what it's talking about.
*Well, I believe that special dispensation might be allowed for a common tag which has become meaningless, like grammar.