Words that start with 'dex' and contain 'r'

What's the most common word that starts with 'dex' and includes 'r' in the dictionary?
Rating as the 14250^th most popular word, you'll want to make sure you have 'dexterity' in your arsenal.

How many letters are in the longest word from this page?
The longest word you could derive from this list is 'dextroamphetamine', and it is made up of 17 characters.

What is an unusual word from this list?
An example of a strange word from this page is 'dextrogyrate'. The conventional definition of 'dextrogyrate' is as follows: "Same as Dextrorotatory.".

How many words is it possible to make using these particular combinations of letters?
From this page of words that start with 'dex' and include 'r', there are 70 brilliant entries that are possible overall.

What's the highest possible score you can get in Scrabble using this list of words that start with 'dex' and include 'r'?
It is possible to make 'dextrad' for a total of 16 in Scrabble.