How many characters does the biggest word from this page contain?The longest word located by Dictionarypedia is 'chondroseptum'.
What is an example of a unusual word that starts with 'c' and includes 'sep'?Standing as our favorite peculiar word on this list is 'cheeseparing'. The general definition of 'cheeseparing' is as follows: "A thin portion of the rind of a cheese. -- A. Scrimping; mean; as, cheeseparing economy.". Source Oxford Dictionary.
How many words are there using the combination of letters specified?One can derive 8 words with the combination you specified.