Words that start with 'n' and contain 'np'

What is an interesting word from this list?
By far the most strange word in this list is 'nonproficient'. The definition of 'nonproficient' is as follows: "One who has failed to become proficient. NON PROS. Non" pros.` (. An abbreviation of Non prosequitur.".

In Scrabble, what's the best score possible using this list of words starting with 'n' that contain 'np'?
With a massive 722 entries, your best option is to go for 'nonpayer' scoring 13 points in total.

Which word that starts with 'n' and includes 'np' is the most common word in the dictionary?
As far as popular words go, there's 'nonproprietary' which is the 9863^rd most common word.

Which word in particular from this list has the largest letter count?
The word 'nonpsychoanalytically' contains 21 characters.

How many acceptable words could one put together using the specified combination?
There are 722 words all in all.