Nor can be used without neither, as in the following sentences:

From warring rutabagas to human beef: the wonderful world of typos

Me and my granddad are always riddeling eachothor and i think this is a wonderfull site (i guessed trust)

But is the following construction grammatical? (More than two choices, no neither)

Where the preceding clause or the preceding sentence is already in the negative, as opposed to a positive one following neither, it is logical to equate it with a neither+[positive]:

Putting ‘but’ or ‘and’ at the start of a sentence is also an effective way of showing surprise: