Words that start with 'uns' and contain 'i'

What word that starts with 'uns' and includes 'i' is the most unique?
The most unusual word from this page is 'unsatiate'. The definition of 'unsatiate' is as follows: "Insatiate. Dr. H. More.". Credit goes to Oxford Dictionary.

What is the largest word you can construct with words that start with 'uns' and include 'i'?
The longest word is 21 letters, which is 'unstraightforwardness'.

How many words is it possible to make using the combination of letters specified?
From this page of words that start with 'uns' and include 'i', you have 1,297 entries that are available.

What is the highest scoring word you can play in Scrabble ?
With so many words from which to select, your best choice is to go for 'unseized' scoring 18 points.

Is there a word on this page that stands out as the most common?
When it comes to popular words, there's 'unsolicited' which is the 9429^th most common word.