Words that start with 'si' and contain 'z'

What is an unusual word from this page?
The most interesting word in this list is 'siziness'. The dictionary defines it as "The quality or state of being sizy; viscousness.".

In total, how many words can you make using these specific combinations of letters?
From this list of words that start with 'si' and include 'z', Dictionarypedia has discovered 87 combinations which are possible.

In Scrabble, what's the best score possible using words that start with 'si' and contain 'z'?
We advise using 'sizzling' for a score of score of 27 points.

What is the most common word for this page?
There's 'size', which is the 1951^st most common word.

How many letters does the longest word on this list contain?
The largest word is 15 characters, which is 'singularization'.