Words that start with 'd' and contain 'tio'

What's the max number of words one can make using this combination of letters?
Altogether, there are up to 958 words.

How many letters does the biggest word from this list consist of?
The largest word you can derive from this list is 'deanthropomorphization', and it is made up of 22 characters.

Is there an example word from this page of word that starts with 'd' and includes 'tio' that could be considered as unusual in any respect?
Undoubtedly one of the most unusual words from this list is 'dictionary'. It is defined as "1. A book containing the words of a language, arranged alphabetically, with explanations of their meanings; a lexicon; a vocabulary; a wordbook. I applied myself to the perusal of our writers; and noting whatever might be of use to ascertain or illustrate any word or phrase, accumulated in time the...".

What's the most common word that starts with 'd' and includes 'tio'?
We've identified that 'donations' is the 757^th most common word.

In Scrabble, what is the best score possible from this list of words that start with 'd' and include 'tio'?
With a plethora of words to pick from, your best choice is to go for 'deductio' scoring 12 points.