Words that start with 'o' and contain 'pa'

Which word in particular on this page has the largest character count?
'Overparticularness', which contains 18 characters.

Is there a word from this page of word that starts with 'o' and includes 'pa' which might be considered as unique in any regard?
Arguably one of the most unusual words from this list is 'overpatient'. 'Overpatient''s definition is "Patient to excess.", according to the English dictionary.

Is there any word on this page that jumps out as the most popular?
The most popular word is 'occupation', which is in fact the 4176^th most common word in this list.

In total, how many words is it possible to make using these specific combinations of letters?
It's possible to derive 250 words using this list.

In Scrabble, what is the highest score you can get using this list of words that start with 'o' and include 'pa'?
With a myriad of words to select from, we'd recommend selecting 'opaquely' scoring 22 points in total.