* Silent letters: The word "dictionary" has a silent "y" at the end, which can be confusing for kids learning to spell.
* Double consonant: It also has a double "c" which can be tricky to remember, especially when the word sounds like it should only have one "c".
* Common spelling errors: Kids often misspell "dictionary" as "dictionery" or "dictonary", so including it on a list helps them practice the correct spelling.
Essentially, even though it seems like a simple word, "dictionary" has some spelling challenges that make it a good candidate for a spelling list, especially for younger learners.