Words that start with 'che' and contain 'f'

What is the longest word you can create with this list?
The longest word on this list is 'chesterfieldian'. It has 15 letters.

What is the most interesting word that starts with 'che' and includes 'f'?
The most peculiar word based on a recent poll is 'cheerfulness'. The definition of 'cheerfulness' is as follows: "Good spirits; a state of moderate joy or gayety; alacrity.". Source Cambridge Dictionary.

What is the max number of words you could assemble from words that start with 'che' and include 'f'?
On this list of words starting with 'che' that contain 'f', you have 34 effective combinations which are possible.

Is there any word on this page that sticks out as the most popular?
'Cheerful' is the most popular word from this that start with 'che' and include 'f', ranked 3340^th most common word.

What is the highest number of points you can get in Scrabble using this list of words starting with 'che' that contain 'f'?
For a total of 25 points, it is possible to play 'checkoff'.