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

In Scrabble, what is the highest score possible from words that start with 'd' and contain 'lph'?
You can make 'delphian' which gets 14 points.

What's the biggest word you can derive using words that start with 'd' and include 'lph'?
'Dimethylsulphoxide'

What's the most common word that starts with 'd' and includes 'lph' in the dictionary?
'Dolphin' is the most popular word from this page, ranked 55844^th most common word.

What is the total number of words you're able to make using this combination of letters?
From this page of words that start with 'd' and contain 'lph', you have 72 effective entries that can be selected.

Is there an example of a word from this page of word that starts with 'd' and includes 'lph' that could be thought of as unique?
'Delph' is certainly the most peculiar word in our list of words that start with 'd' and include 'lph'. According to the Oxford dictionary, 'delph' means "Delftware. Five nothings in five plates of delph. Swift. The drain on the land side of a sea embankment. Knight.".