In Scrabble, what's the highest score possible using words starting with 's' that contain 'gma'?You can make 'syntagma' which scores 14 points.
How many characters does the longest word from this list contain?The largest word you can construct from this list is 'subdiaphragmatically', and it consists of 20 characters.
What is the most common word that starts with 's' and includes 'gma' in the dictionary?A well-known word for the combination you requested is 'stigma'.
How many words can you make using the combination specified?Overall, you could create exactly 70 words.
Is there an example of a word from this page of word that starts with 's' and includes 'gma' which might be deemed as unusual?An example of an uncommon word from this list is 'stigmatization'. The definition of 'stigmatization' is as follows: "1. The act of stigmatizing. 2. (R. C. Ch.) The production of stigmata upon the body. See Stigma, 8.". Source Oxford Dictionary.