Here's why:
* Pronunciation: The sound represented by "j" is usually a single sound. A double "jj" would be redundant and create an unusual pronunciation.
* Letter Combinations: While "j" can be part of digraphs (two letters making one sound) like "ch" or "sh," there are no standard digraphs or trigraphs that include a double "j".
* Spelling Rules: English spelling rules generally don't allow for double consonants unless there's a specific phonetic reason, which is not the case with "jj".
Therefore, you won't find any English words with a double "jj".