I'm thinking of a word that rhymes with "herb"

No seasonal reference intended. The mistletoe doesn't grow this far north and I've never seen a specimen.

Purists say a sentence isnʻt a sentence if it doesnʻt have
a __ __ __ __.

I say so too, but to me a sentence not being a sentence only means that I mustn't add a period to it when it's an item in a bullet list.

Not: verb

Something writers like to receive?
Bret Lottʻs The Man who Owned Vermont got a
a very favorable one from James Baldwin which closes with the words "May there be many others like this."

That is something coveted indeed—yet preposterous old Crambo will not have it!

Not: blurb, verb

Something I could add to a verb?

Verbs can be hotrodded with all sorts of things but this time around Crambo is not in a grammatical mood.

Not: adverb, blurb, verb

Something I might do to my appetite, my tongue, or my enthusiasm?

Whet Whet Whet?

Not: adverb, blurb, curb, verb

THe next one of which the
@Crambo! word is a proper noun or adjective will be the first, if I remember rightly, but Iʻll risk guessing:
the arch-foe of a Croatian or
of a Kossovo Albanian?

Crambo's word is not capitalized.

Not: adverb, blurb, curb, Serb, verb

Any of the various terms referring to the inhabited areas ("bedroom communities"?) that surround cities?

Annnnd the victorious shotgun blast is Jim53's! Crambo's word was "exurb".

Not: adverb, blurb, curb, Serb, verb

Thanks, defaults. New game will start on Tuesday, unless someone can't wait, in which case go ahead and start one.

New game is over yonder.